/* homepool product site — warm residential character with a precise technical layer */
/* -----------------------------------------------------------------------------
 * 方塘网络 · 水墨令牌
 * 取自 /home/admin/hetune-web（方塘 · Fangtang API）的 vendor/base.css 与 green.css。
 * 变量名沿用旧名（--blue/--orange/--green），语义已换：
 *   --blue*  = 松墨绿 Pine-Ink Green   --orange* = 赭红/朱砂 Cinnabar
 * 改名要改遍全站选择器，收益为零，所以只在这里说清楚。
 * -------------------------------------------------------------------------- */
:root{
  --canvas:#f7f5ef;--paper:#fbfaf5;--paper-2:#eeebe1;--ink:#282825;--muted:#625f59;
  --line:#dcd7c9;--line-strong:#b3ada0;--blue:#49785b;--blue-fill:#49785b;--blue-hover:#58946d;--blue-soft:#e8efe9;
  --orange:#a94e3f;--orange-text:#a94e3f;--green:#49785b;--green-bright:#85b295;--red:#a33b32;--red-soft:#f7ece8;--focus:#a94e3f;
  --dark:#22231f;--dark-2:#1b1c19;--dark-line:#3c3d37;--dark-muted:#b9b5aa;
  --seal:#a74638;
  --radius:12px;--shadow:0 26px 64px rgba(40,40,37,.10);--gutter:clamp(20px,4vw,56px);
  --font:"Public Sans",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  --serif:"Lora","Source Serif 4","Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun","宋体",Georgia,"Times New Roman",serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Monaco,Consolas,"Liberation Mono",monospace;
  --wash:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='w' x='0' y='0' width='100%25' height='100%25'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' seed='9'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.15 0 0 0 0 0.15 0 0 0 0 0.14 .055 .055 .055 0 -.069'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23w)'/%3E%3C/svg%3E");
}
[data-theme="dark"]{
  --canvas:#191a18;--paper:#22231f;--paper-2:#262722;--ink:#f1eee5;--muted:#cbc7bd;
  --line:#3a3b34;--line-strong:#5c5d54;--blue:#85b295;--blue-fill:#3f6a52;--blue-hover:#4d7d61;--blue-soft:#26312a;
  --orange:#d17a6c;--orange-text:#d17a6c;--green:#85b295;--green-bright:#98c6a8;--red:#d98d7e;--red-soft:#33231f;--focus:#e0a294;
  --dark:#141513;--dark-2:#1b1c19;--dark-line:#34352f;--dark-muted:#b9b5aa;
  --seal:#d17a6c;
  --shadow:0 26px 60px rgba(0,0,0,.42);
  --wash:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='w' x='0' y='0' width='100%25' height='100%25'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' seed='4'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.94 0 0 0 0 0.93 0 0 0 0 0.88 .055 .055 .055 0 -.069'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23w)'/%3E%3C/svg%3E");
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:82px}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}
button,input,select{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
::selection{background:var(--orange);color:var(--canvas)}
h1,h2,h3,p{margin-top:0}
h1,h2,h3,strong,b{font-weight:600}
h1{font-size:clamp(3rem,5vw,5.2rem);line-height:1;letter-spacing:-.045em}
h2{font-size:clamp(2.1rem,4.2vw,4.15rem);line-height:1.08;letter-spacing:-.04em}
h3{font-size:1.2rem;line-height:1.3}
.wrap{width:min(1360px,100%);margin-inline:auto;padding-inline:var(--gutter)}
.wrap--read{width:min(820px,100%);margin-inline:auto;padding-inline:var(--gutter)}
.svg-defs{position:absolute;width:0;height:0;overflow:hidden}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.skip-link{position:fixed;z-index:1000;left:16px;top:12px;transform:translateY(-150%);padding:10px 14px;background:var(--ink);color:var(--canvas);border-radius:7px;text-decoration:none}
.skip-link:focus{transform:none}

/* header */
.site-header{height:72px;position:sticky;top:0;z-index:50;background:var(--canvas);background:color-mix(in srgb,var(--canvas) 91%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 8px 28px rgba(18,31,26,.06)}
.site-header__inner{height:100%;display:flex;align-items:center;gap:30px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:1rem;font-weight:700;letter-spacing:-.025em;text-decoration:none;white-space:nowrap}
.nav-disclosure{flex:1}
.nav{display:flex;align-items:center;justify-content:flex-end;gap:clamp(14px,1.8vw,26px)}
.nav a{position:relative;min-height:44px;display:inline-flex;align-items:center;font-size:.82rem;color:var(--muted);text-decoration:none;white-space:nowrap}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:7px;height:2px;background:var(--orange);transition:right .18s}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav a:hover::after,.nav a[aria-current="page"]::after{right:0}
.header-actions{display:flex;align-items:center;gap:9px}
.theme-toggle{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;background:transparent;color:var(--ink);cursor:pointer}
.theme-toggle:hover{background:var(--paper)}

/* controls */
.btn{min-height:44px;padding:0 20px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid transparent;border-radius:11px;font-size:.9rem;font-weight:650;text-decoration:none;cursor:pointer;transition:transform .18s,background .18s,border-color .18s,color .18s,box-shadow .18s}
.btn:hover{transform:translateY(-2px);text-decoration:none}
.btn:disabled{opacity:.6;cursor:wait;transform:none}
.btn svg{width:18px;height:18px}
.btn--lg{min-height:54px;padding:0 26px;font-size:.94rem}
.btn--sm{min-height:40px;padding:0 16px;font-size:.8rem}
.btn--block{width:100%}
.btn--primary{background:var(--ink);color:var(--canvas);border-color:var(--ink)}
.btn--primary:hover{background:var(--green);border-color:var(--green);color:var(--canvas);box-shadow:none}
.btn--ink{background:var(--ink);color:var(--canvas);border-color:var(--ink)}
.btn--ink:hover{background:var(--green);border-color:var(--green);color:var(--canvas)}
.btn--ghost,.btn--quiet{border-color:var(--line-strong);background:transparent;color:var(--ink)}
.btn--ghost:hover,.btn--quiet:hover{background:var(--paper);border-color:var(--ink)}

.kicker,.section-index{display:flex;align-items:center;gap:9px;margin:0 0 24px;font-family:var(--mono);font-size:.68rem;line-height:1.4;letter-spacing:.11em;text-transform:uppercase;color:var(--muted)}
.signal-dot{width:7px;height:7px;border-radius:50%;background:var(--green);color:var(--green);box-shadow:0 0 0 5px color-mix(in srgb,var(--green) 13%,transparent)}
.section{padding:clamp(80px,9vw,132px) 0}
.section-heading h2{margin:0}.section-heading--light{color:#f1eee5}.section-heading--light .section-index{color:var(--dark-muted)}

/* homepage hero */
.hero--home{position:relative;overflow:hidden;padding:clamp(48px,6.5vw,92px) 0 0;border-bottom:1px solid var(--line)}
.hero--home::before{content:"";position:absolute;inset:0 0 auto 0;height:78%;pointer-events:none;background:linear-gradient(90deg,color-mix(in srgb,var(--line) 28%,transparent) 1px,transparent 1px),linear-gradient(color-mix(in srgb,var(--line) 24%,transparent) 1px,transparent 1px);background-size:64px 64px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.42),transparent 82%)}
.hero--home::after{content:"";position:absolute;z-index:-1;width:520px;height:520px;right:-220px;top:-230px;border-radius:50%;background:color-mix(in srgb,var(--orange) 13%,transparent);filter:blur(1px)}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(440px,.92fr);align-items:center;gap:clamp(48px,7vw,105px)}
.hero-copy{padding-bottom:clamp(52px,7vw,96px)}
.hero-status{width:max-content;max-width:100%;display:flex;align-items:center;gap:9px;margin:0 0 28px;padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:var(--paper);font-family:var(--mono);font-size:.67rem;letter-spacing:.04em;color:var(--muted)}
.hero-status strong{color:var(--ink)}
.hero-copy h1{max-width:770px;margin:0 0 29px;font-size:clamp(3.6rem,5.2vw,5.6rem)}
.hero-copy h1 span,.price-hero h1 span,.account-intro h1 span,.download-intro h1 span{color:var(--orange)}
.hero__lede{max-width:720px;color:var(--muted);font-size:clamp(1.04rem,1.42vw,1.22rem);line-height:1.75}
.hero__lede strong{color:var(--ink)}
.hero-fit{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:27px 0 0;color:var(--muted);font-size:.78rem}
.hero-fit strong{margin-right:3px;color:var(--ink)}
.hero-fit span{padding:4px 8px;border:1px solid var(--line);border-radius:7px;background:color-mix(in srgb,var(--paper) 65%,transparent);font-family:var(--mono);font-size:.66rem}
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:34px 0 17px}
.hero-next{margin:0;color:var(--muted);font-size:.75rem}

/* Product object: a buyer-readable path, not an infrastructure diagram. */
.product-panel{position:relative;background:var(--dark);color:#f1eee5;border:1px solid #3c3d37;border-radius:22px;box-shadow:var(--shadow);overflow:hidden}
.product-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 52%,rgba(120,229,182,.055));pointer-events:none}
.product-panel__head{position:relative;z-index:1;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:22px 23px;border-bottom:1px solid #3a3b35}
.product-panel__head>div{display:grid;gap:6px}.product-panel__head strong{font-size:.92rem}.panel-eyebrow{font-family:var(--mono);font-size:.58rem;letter-spacing:.11em;color:#a09c92}
.live-badge{flex:none;display:inline-flex;align-items:center;gap:7px;padding:5px 8px;border:1px solid #4a4b43;border-radius:999px;font-family:var(--mono);font-size:.58rem;color:#98c6a8}.live-badge i,.region-summary--open>span i{width:6px;height:6px;border-radius:50%;background:#85b295;box-shadow:0 0 12px rgba(120,229,182,.7)}
.connection-path{position:relative;z-index:1;list-style:none;margin:0;padding:8px 23px 10px}
.connection-path li{position:relative;min-height:78px;display:flex;align-items:center;gap:16px;border-bottom:1px solid #34352f}
.connection-path li:not(:last-child)::after{content:"↓";position:absolute;z-index:2;left:17px;bottom:-10px;width:20px;height:20px;display:grid;place-items:center;background:var(--dark);color:#85817a;font-family:var(--mono);font-size:.62rem}
.connection-path small{display:block;margin-bottom:2px;font-family:var(--mono);font-size:.57rem;letter-spacing:.1em;color:#97938a}.connection-path strong{font-size:.88rem}
.node-icon{width:36px;height:36px;display:grid;place-items:center;flex:none;border:1px solid #45463f;border-radius:10px;font-family:var(--mono);font-size:.58rem;color:#a9a59a;background:#262722}
.connection-path__home{min-height:90px!important}.connection-path__home em{margin-left:auto;font-family:var(--mono);font-size:.58rem;font-style:normal;color:#85b295;white-space:nowrap}
.house-mark{position:relative;width:36px;height:31px;flex:none;border:2px solid #d17a6c;border-top:0;border-radius:2px}.house-mark::before{content:"";position:absolute;width:23px;height:23px;left:4px;top:-11px;border-left:2px solid #d17a6c;border-top:2px solid #d17a6c;transform:rotate(45deg);border-radius:2px}.house-mark i{position:absolute;z-index:1;width:6px;height:6px;left:13px;bottom:7px;border-radius:50%;background:#85b295}
.region-snapshot{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#3a3b35;border-block:1px solid #3a3b35}
.region-summary{min-height:154px;padding:20px;display:flex;flex-direction:column;background:#22231f}.region-summary>span{display:flex;align-items:center;gap:6px;align-self:flex-start;margin-bottom:auto;font-family:var(--mono);font-size:.57rem;color:#a09c92}.region-summary>span i{width:6px;height:6px;border-radius:50%;background:#7c786f}.region-summary>small{font-family:var(--mono);font-size:.55rem;letter-spacing:.09em;color:#8b877f}.region-summary>strong{margin:3px 0 0;font-size:1.28rem}.region-summary>p{margin:2px 0 0;color:#b9b5aa;font-size:.72rem}.region-summary--open{box-shadow:inset 0 3px #85b295}.region-summary--open>span{color:#98c6a8}.region-summary--soon{background:#1e1f1b;color:#b0aca2}.region-summary--soon>span{color:#b0aca2}
.capacity-caption{position:relative;z-index:1;display:flex;justify-content:space-between;gap:14px;margin:0;padding:15px 20px;font-family:var(--mono);font-size:.56rem;color:#97938a}
.capacity-caption span:first-child{color:#98c6a8}
.fact-ribbon{position:relative;display:grid;grid-template-columns:repeat(4,1fr);padding-top:0;padding-bottom:0;border-top:1px solid var(--line)}
.fact-ribbon>div{min-height:154px;padding:28px clamp(18px,2.4vw,34px);border-right:1px solid var(--line)}.fact-ribbon>div:first-child{padding-left:0}.fact-ribbon>div:last-child{border-right:0;padding-right:0}
.fact-ribbon span{font-family:var(--mono);font-size:.61rem;color:var(--orange-text)}.fact-ribbon strong{display:block;margin:17px 0 6px;font-size:1.04rem}.fact-ribbon p{margin:0;color:var(--muted);font-size:.78rem;line-height:1.65}

/* homepage sections */
.section-intro h2{margin:0}.section-intro>p:last-child{max-width:680px;margin:22px 0 0;color:var(--muted)}
.section-intro--split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.65fr);gap:clamp(50px,9vw,150px);align-items:end}.section-intro--split>p:last-child{margin:0}
.principle-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:58px}.principle-grid article{min-height:295px;padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}.principle-grid article>span{display:inline-flex;padding:5px 8px;border:1px solid var(--line);border-radius:6px;font-family:var(--mono);font-size:.6rem;letter-spacing:.06em;color:var(--orange-text)}.principle-grid h3{margin:76px 0 12px;font-size:1.42rem}.principle-grid p{margin:0;color:var(--muted);font-size:.9rem}
.section--ink{background:var(--dark);color:#f1eee5}
.section-intro--light>p:last-child{color:var(--dark-muted)}.section-intro--light .section-index{color:#a9a59a}
.fit-layout{display:grid;grid-template-columns:minmax(280px,.67fr) minmax(0,1.33fr);gap:clamp(55px,9vw,150px)}
.fit-board{display:grid;grid-template-columns:1.15fr .85fr;border:1px solid var(--dark-line);background:var(--dark-line);gap:1px}
.fit-list{background:var(--dark)}.fit-list article{display:grid;grid-template-columns:38px 1fr auto;gap:16px;align-items:start;padding:25px;border-bottom:1px solid var(--dark-line)}.fit-list article:last-child{border-bottom:0}.fit-list article>span{font-family:var(--mono);font-size:.6rem;color:var(--green-bright)}.fit-list h3{margin:0 0 6px;font-size:1.02rem}.fit-list p{margin:0;color:var(--dark-muted);font-size:.8rem}.fit-list b{padding:3px 7px;border:1px solid #4a4b43;border-radius:5px;color:#98c6a8;font-family:var(--mono);font-size:.55rem}
.guardrail{padding:27px;background:var(--dark-2)}.guardrail>span{font-family:var(--mono);font-size:.61rem;letter-spacing:.1em;color:#d98d7e}.guardrail h3{margin:16px 0 24px;font-size:1.28rem}.guardrail ul{list-style:none;margin:0;padding:0}.guardrail li{padding:10px 0;border-top:1px solid var(--dark-line);color:#d6d2c7;font-size:.8rem}.guardrail li::before{content:"×";margin-right:9px;color:#d98d7e}.guardrail p{margin:24px 0 0;color:var(--dark-muted);font-size:.75rem}
.section--flow{background:var(--paper);border-bottom:1px solid var(--line)}
.process-grid{list-style:none;margin:58px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;border:1px solid var(--line);background:var(--line)}.process-grid>li{position:relative;min-height:330px;padding:30px;background:var(--paper)}.process-grid>li>span{position:absolute;right:25px;top:23px;font-family:var(--mono);font-size:2.3rem;line-height:1;color:color-mix(in srgb,var(--line-strong) 35%,transparent)}.process-grid small{font-family:var(--mono);font-size:.6rem;letter-spacing:.1em;color:var(--orange-text)}.process-grid h3{margin:82px 0 12px;font-size:1.35rem}.process-grid p{margin:0;color:var(--muted);font-size:.87rem}.process-grid a{position:absolute;left:30px;bottom:28px;display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:.8rem;font-weight:600}.process-grid a svg{width:16px;height:16px}
.honest-grid,.included-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:clamp(60px,9vw,150px)}
.boundary-list{counter-reset:boundary;border-top:1px solid var(--line)}.boundary-list>article{position:relative;padding:29px 0 29px 56px;border-bottom:1px solid var(--line)}.boundary-list>article::before{content:"0" counter(boundary);counter-increment:boundary;position:absolute;left:0;top:32px;font-family:var(--mono);font-size:.63rem;color:var(--orange-text)}.boundary-list b{font-size:1.08rem}.boundary-list p{margin:7px 0 0;color:var(--muted);font-size:.9rem}
.section--contact{padding-top:22px}.contact-panel{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:end;padding:clamp(34px,5vw,68px);background:var(--blue-fill);color:#fff;border-radius:22px;overflow:hidden}.contact-panel::after{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(255,255,255,.22);border-radius:50%;right:-120px;top:-200px;box-shadow:0 0 0 66px rgba(255,255,255,.035)}.contact-panel>*{position:relative;z-index:1}.contact-panel h2{max-width:780px}.contact-panel p{color:#e4ece7;max-width:720px}.contact-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}.contact-side .contact-actions{margin-top:0}.contact-panel .btn--ink{background:#fff;color:#22231f;border-color:#fff}.contact-panel .btn--ghost{border-color:rgba(255,255,255,.72);color:#fff}.contact-panel .btn--ghost:hover{background:#fff;color:#22231f}.contact-meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin:18px 0 0!important;font-size:.74rem}.contact-meta span::before{content:"•";margin-right:7px;color:#a9cfb6}
.faq-grid{display:grid;grid-template-columns:.62fr 1.38fr;gap:8vw}.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{list-style:none;cursor:pointer;min-height:72px;padding:20px 3px;display:flex;justify-content:space-between;align-items:center;gap:20px;font-weight:600}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary svg{width:20px;height:20px;flex:none;transition:transform .2s}.faq-list details[open] summary svg{transform:rotate(180deg)}.faq-list details p{color:var(--muted);max-width:800px;margin:-5px 0 26px;padding-right:40px}

/* pricing */
.price-hero{padding:clamp(55px,7vw,96px) 0}.price-hero__grid{display:grid;grid-template-columns:1.2fr .8fr;gap:8vw;align-items:end}.price-hero h1{font-size:clamp(3rem,5vw,5.2rem);margin:0}.price-hero__grid>div:last-child p{font-size:1.08rem;color:var(--muted)}.price-hero__grid>div:last-child .price-proof{color:var(--ink);font-family:var(--mono);font-size:.72rem;letter-spacing:.04em}.price-hero__grid>div:last-child a{display:inline-flex;gap:8px;align-items:center;color:var(--blue);font-weight:600}.price-hero svg{width:18px}
.open-status{border-block:1px solid var(--line);background:var(--paper)}.open-status__inner{min-height:72px;display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center}.open-status p{margin:0;color:var(--muted);font-size:.9rem}.open-status strong{color:var(--ink)}.open-status a{font-size:.85rem;color:var(--blue);font-weight:600}.status-tag{font-family:var(--mono);font-size:.65rem;letter-spacing:.08em}.status-tag i{display:inline-block;width:7px;height:7px;margin-right:7px;background:var(--orange);border-radius:50%}
.region-picker{padding-bottom:clamp(65px,8vw,110px)}.region-heading{display:grid;grid-template-columns:1.1fr .65fr;gap:8vw;align-items:end;margin-bottom:48px}.region-heading h2{margin:0}.region-heading>p{margin:0;color:var(--muted)}.region-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.region-card{position:relative;padding:clamp(25px,3.5vw,44px);border:1px solid var(--line);border-radius:22px;background:var(--paper);overflow:hidden}.region-card__top{display:flex;justify-content:space-between;gap:20px;padding-bottom:21px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:.63rem;color:var(--muted);letter-spacing:.08em}.region-status{display:inline-flex;align-items:center;gap:7px}.region-status i{width:7px;height:7px;border-radius:50%;background:var(--line-strong)}.region-status--live{color:var(--green)}.region-status--live i{background:var(--green);box-shadow:0 0 0 5px color-mix(in srgb,var(--green) 13%,transparent)}.region-card__body{padding:31px 0}.region-card__body>p:first-child{font-family:var(--mono);font-size:.65rem;letter-spacing:.12em;color:var(--orange-text);margin-bottom:8px}.region-card__body h3{font-size:clamp(1.7rem,3vw,2.7rem);margin:0}.region-card__body>strong{display:block;font-size:clamp(3.2rem,5vw,5.3rem);line-height:1;margin:32px 0 20px;letter-spacing:-.06em}.region-card__body>strong small{font-size:.75rem;letter-spacing:0;color:var(--muted)}.region-card__body>p:last-child{min-height:54px;margin:0;color:var(--muted)}.region-card--active{border:2px solid var(--green);box-shadow:0 22px 55px color-mix(in srgb,var(--green) 12%,transparent)}.region-card--disabled{background:var(--paper-2);filter:saturate(.25);color:var(--muted)}.region-card--disabled::after{content:"COMING SOON";position:absolute;right:-34px;top:56px;transform:rotate(35deg);padding:5px 42px;background:var(--line);font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;color:var(--ink)}.btn--disabled,.btn--disabled:hover{background:var(--line);border-color:var(--line);color:var(--muted);cursor:not-allowed;transform:none;opacity:1}.region-control-note{display:flex;align-items:center;flex-wrap:wrap;gap:10px 24px;margin:22px 0 0;padding:18px 22px;border:1px solid var(--line);border-radius:12px;color:var(--muted);font-size:.78rem}.region-control-note b{color:var(--ink);margin-right:auto}.region-control-note span::before{content:"•";color:var(--orange);margin-right:8px}
.plans-toolbar{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:60px}.plans-toolbar h2{font-size:clamp(2.2rem,4vw,4rem);margin:0}.cycle{display:flex;padding:4px;border:1px solid var(--line);border-radius:999px;background:var(--paper)}.cycle button{border:0;border-radius:999px;padding:9px 17px;background:transparent;color:var(--muted);cursor:pointer;font-size:.83rem}.cycle button[aria-pressed="true"]{background:var(--ink);color:var(--canvas)}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}.plan{position:relative;display:flex;flex-direction:column;padding:31px;background:var(--paper);border:1px solid var(--line);border-radius:19px}.plan--featured{border:2px solid var(--blue);box-shadow:0 20px 55px color-mix(in srgb,var(--blue-fill) 16%,transparent)}.plan__flag{position:absolute;right:22px;top:-14px;background:var(--orange);color:var(--canvas);border-radius:99px;padding:6px 11px;font-size:.66rem;font-weight:600}.plan__index{font-family:var(--mono);font-size:.65rem;color:var(--orange-text);float:right}.plan__scope{display:block;margin-bottom:5px;font-family:var(--mono);font-size:.58rem;letter-spacing:.08em;color:var(--green)}.plan__name{font-size:1.3rem;font-weight:600}.plan__top p{min-height:54px;color:var(--muted);font-size:.88rem;margin:12px 0 0}.plan__price{display:flex;align-items:baseline;margin:30px 0 4px}.plan__price>span{font-size:1.1rem}.plan__price strong{font-size:clamp(3rem,4.2vw,4.6rem);line-height:1;letter-spacing:-.06em}.plan__price em{font-style:normal;color:var(--muted);font-size:.85rem;margin-left:7px}.plan__save{min-height:25px;font-size:.72rem;color:var(--green)}.plan ul{list-style:none;padding:24px 0;margin:12px 0 28px;border-top:1px solid var(--line);flex:1}.plan li{display:flex;gap:9px;margin:11px 0;font-size:.88rem}.plan li svg{width:17px;height:17px;flex:none;margin-top:4px;color:var(--green)}.plans-note{text-align:center;color:var(--muted);font-size:.8rem;margin:24px 0 0}
.included-list{border-top:1px solid var(--dark-line)}.included-list>div{display:grid;grid-template-columns:50px 200px 1fr;gap:15px;padding:24px 0;border-bottom:1px solid var(--dark-line)}.included-list span{font-family:var(--mono);font-size:.65rem;color:var(--green-bright)}.included-list p{margin:0;color:var(--dark-muted)}
.contact-panel--price{display:grid;grid-template-columns:1fr 1fr;gap:35px}.contact-panel--price .contact-actions{grid-column:1/-1}.contact-cards{display:grid;gap:1px;background:rgba(255,255,255,.25);border:1px solid rgba(255,255,255,.25)}.contact-cards>*{display:block;padding:14px 18px;background:rgba(0,0,0,.08);text-decoration:none}.contact-cards small,.contact-cards strong{display:block}.contact-cards small{font-family:var(--mono);font-size:.61rem;letter-spacing:.08em;color:#d8d4c8}.contact-cards strong{margin-top:3px}

/* account and download are deliberately separate page layouts. */
.account-hero{padding:clamp(50px,7vw,95px) 0 clamp(80px,9vw,130px);position:relative;overflow:hidden}
[data-page="account"] .account-service-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(390px,.72fr);column-gap:clamp(55px,9vw,150px);row-gap:20px;align-items:start}
[data-page="account"] .account-intro h1{font-size:clamp(3rem,4.8vw,5rem);margin-bottom:28px}
[data-page="account"] .account-process{grid-column:1}
[data-page="account"] .account-service-panel{grid-column:2;grid-row:1/3;background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:clamp(26px,4vw,45px);box-shadow:var(--shadow)}
.account-service-panel__head{padding-bottom:18px;margin-bottom:8px;border-bottom:1px solid var(--line)}.account-service-panel__head h2{font-size:clamp(2rem,3vw,3rem);margin:0}.account-capabilities{list-style:none;padding:0;margin:0}.account-capabilities li{display:grid;grid-template-columns:38px 1fr;gap:14px;padding:20px 0;border-bottom:1px solid var(--line)}.account-capabilities li>span{font-family:var(--mono);font-size:.66rem;color:var(--orange-text)}.account-capabilities strong{font-size:.96rem}.account-capabilities p{margin:3px 0 0;color:var(--muted);font-size:.8rem}
.account-steps{list-style:none;margin:25px 0 20px;padding:0;border-top:1px solid var(--line)}.account-steps li{display:grid;grid-template-columns:48px 1fr;gap:16px;padding:19px 0;border-bottom:1px solid var(--line)}.account-steps li>span{font-family:var(--mono);font-size:.66rem;color:var(--orange-text)}.account-steps strong{font-size:1rem}.account-steps p{color:var(--muted);font-size:.84rem;margin:2px 0 0}.account-proof{display:flex;flex-wrap:wrap;gap:10px 20px;font-family:var(--mono);font-size:.64rem;color:var(--muted)}.account-proof span{display:flex;align-items:center;gap:6px}.account-proof i{width:5px;height:5px;border-radius:50%;background:var(--green)}
.account-bottom{background:var(--paper);border-block:1px solid var(--line)}.account-bottom__grid{display:grid;grid-template-columns:repeat(3,1fr)}.account-bottom__grid>div{padding:35px 3vw;border-right:1px solid var(--line)}.account-bottom__grid>div:first-child{padding-left:0}.account-bottom__grid>div:last-child{border:0;padding-right:0}.account-bottom span{font-family:var(--mono);font-size:.65rem;color:var(--orange-text)}.account-bottom p{font-size:.82rem;color:var(--muted);margin:8px 0 0}

/* 用户中心（account）：登录 / 注册 / 找回密码 / 绑定。
   只用既有令牌，颜色不写死；每个可点区域 ≥44px，触屏上不用瞄准。 */
.notice{display:block;margin:14px 0 0;padding:11px 13px;border:1px solid var(--line);background:var(--canvas);color:var(--muted);font-size:.82rem;line-height:1.55}
.notice--ok{border-color:var(--blue);background:var(--blue-soft);color:var(--blue)}
.notice--bad{border-color:var(--red);background:var(--red-soft);color:var(--red)}
.security-note,.install-note{margin:22px 0 0;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.76rem;line-height:1.6}
.auth-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 22px}
.auth-tab{min-height:44px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:var(--paper-2);color:var(--muted);font:inherit;font-size:.84rem;cursor:pointer}
.auth-tab[aria-selected="true"]{border-color:var(--blue);background:var(--blue-soft);color:var(--blue)}
.auth-field{display:block;margin:0 0 15px}
.auth-field>span{display:block;margin-bottom:6px;font-size:.76rem;color:var(--muted)}
.auth-field input{width:100%;min-height:44px;padding:10px 13px;border:1px solid var(--line);border-radius:10px;background:var(--canvas);color:var(--ink);font:inherit;font-size:.92rem}
.auth-field input:focus-visible{outline:2px solid var(--focus);outline-offset:1px}
.auth-code{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:start}
.auth-code .btn{min-height:44px;margin-top:23px;white-space:nowrap}
.auth-hint{margin:0 0 15px;color:var(--muted);font-size:.76rem;line-height:1.6}
.auth-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.auth-actions .btn{min-height:44px}
.auth-status{list-style:none;margin:18px 0 0;padding:0;border-top:1px solid var(--line)}
.auth-status li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:.86rem}
.auth-status li>span{color:var(--muted);font-size:.78rem}
.auth-status b{font-weight:600;text-align:right;overflow-wrap:anywhere}
.auth-state{display:inline-block;padding:3px 9px;border:1px solid var(--line);border-radius:999px;font-family:var(--mono);font-size:.64rem;color:var(--muted)}
.auth-state[data-state="active"]{border-color:var(--green);color:var(--green)}
.auth-state[data-state="pending"],.auth-state[data-state="expired"]{border-color:var(--orange);color:var(--orange-text)}
.auth-state[data-state="disabled"]{border-color:var(--red);color:var(--red)}
.auth-bind{margin-top:22px;padding-top:16px;border-top:1px solid var(--line)}
.auth-bind>summary{min-height:44px;display:flex;align-items:center;color:var(--blue);font-size:.82rem;cursor:pointer}
.auth-bind[open]>summary{margin-bottom:12px}

[data-page="download"] .download-grid{display:grid;grid-template-columns:minmax(0,.82fr) minmax(440px,1.18fr);column-gap:clamp(45px,7vw,120px);row-gap:clamp(45px,6vw,85px);align-items:start}
[data-page="download"] .download-intro h1{font-size:clamp(3rem,4.8vw,5rem);margin-bottom:28px}
[data-page="download"] .release-panel{grid-column:2;grid-row:1;background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:clamp(26px,4vw,45px);box-shadow:var(--shadow)}
.release-panel__head{padding-bottom:18px;border-bottom:1px solid var(--line)}.release-panel__head h2{font-size:clamp(2rem,3vw,3rem);margin:0 0 9px}.release-panel__head p{color:var(--muted);margin:0}
[data-page="download"] .download-guidance{grid-column:1/-1;border-top:1px solid var(--line);padding-top:clamp(35px,5vw,65px)}.download-guidance>h2{font-size:clamp(2rem,3.5vw,3.4rem)}.download-guidance__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin:30px 0;background:var(--line);border:1px solid var(--line)}.download-guidance__grid article{padding:28px;background:var(--canvas)}.download-guidance__grid span{font-family:var(--mono);font-size:.65rem;color:var(--orange-text)}.download-guidance__grid h3{margin:35px 0 10px}.download-guidance__grid p{margin:0;color:var(--muted);font-size:.84rem}
.platforms{display:grid;gap:10px;margin:26px 0}.platform{position:relative;padding:17px 45px 17px 18px;border:1px solid var(--line);border-radius:11px;background:var(--canvas);text-decoration:none}.platform::after{content:"↓";position:absolute;right:18px;top:18px;color:var(--blue);font-weight:600}.platform:hover{border-color:var(--blue);background:var(--blue-soft);text-decoration:none}.platform strong,.platform span{display:block}.platform span{color:var(--muted);font-size:.74rem;margin-top:2px}.install-note{padding:19px;background:var(--paper-2);border-radius:10px}.install-note ol{margin:8px 0 0;padding-left:20px;color:var(--muted);font-size:.8rem}.security-note{margin:17px 0 0;color:var(--muted);font-size:.72rem}.notice{padding:11px 13px;margin:13px 0;border:1px solid var(--line);border-radius:9px;font-size:.82rem}.notice--bad,.notice--err{background:var(--red-soft);border-color:var(--red);color:var(--red)}.notice--ok{background:var(--paper-2);background:color-mix(in srgb,var(--green) 10%,var(--paper));border-color:var(--green);color:var(--green)}
[hidden]{display:none!important}

/* shared utility surfaces */
.card,.callout{padding:clamp(24px,4vw,38px);background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)}
.hero:not(.hero--home){padding-top:60px}.hero:not(.hero--home)+.hero__lede{color:var(--muted)}
.dim,.hint{color:var(--muted)}.mono{font-family:var(--mono)}.mt-5{margin-top:1.25rem}.mt-6{margin-top:1.5rem}.mt-8{margin-top:2rem}.btn-row{display:flex;gap:10px;flex-wrap:wrap}

/* footer */
.site-footer{padding:42px 0;border-top:1px solid var(--line)}.site-footer__inner{display:grid;grid-template-columns:auto 1fr auto auto;gap:30px;align-items:center}.site-footer p,.site-footer>div>span{font-size:.75rem;color:var(--muted);margin:0}.site-footer nav{display:flex;gap:18px}.site-footer nav a{font-size:.75rem;color:var(--muted);text-decoration:none}.site-footer nav a:hover{color:var(--ink)}

@media(max-width:1160px){
  .nav{display:none}.site-header__inner{gap:12px}.header-actions{margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:0}.hero-copy{max-width:850px;padding-bottom:58px}.product-panel{width:min(720px,100%);justify-self:center;margin-bottom:64px}
  .fit-layout{grid-template-columns:1fr;gap:48px}.fit-board{max-width:900px}
  .honest-grid,.included-grid,.faq-grid,.region-heading{grid-template-columns:1fr;gap:48px}.contact-panel--price{grid-template-columns:1fr}.contact-panel--price .contact-actions{grid-column:auto}
  .plans{grid-template-columns:1fr}.plan{max-width:680px;width:100%;margin-inline:auto}.plan__top p{min-height:0}.included-list>div{grid-template-columns:45px 180px 1fr}
  .price-hero__grid{grid-template-columns:1fr;gap:35px}.account-intro{max-width:820px}
  [data-page="account"] .account-service-grid{grid-template-columns:1fr}[data-page="account"] .account-process{grid-column:1}[data-page="account"] .account-service-panel{grid-column:1;grid-row:auto;width:min(680px,100%);justify-self:center}
  [data-page="download"] .download-grid{grid-template-columns:1fr}[data-page="download"] .release-panel{grid-column:1;grid-row:auto;width:min(760px,100%);justify-self:center}[data-page="download"] .download-guidance{grid-column:1}.download-guidance__grid{grid-template-columns:1fr}
  .site-footer__inner{grid-template-columns:auto 1fr auto}.site-footer__inner>span{grid-column:2}
}
.platform.is-disabled{opacity:.52;cursor:not-allowed;filter:grayscale(.35)}
.platform.is-disabled::after{content:"—";color:var(--muted)}
@media(max-width:900px){
  .section-intro--split{grid-template-columns:1fr;gap:26px}.section-intro--split>p:last-child{max-width:700px}
  .principle-grid,.process-grid{grid-template-columns:1fr}.principle-grid article{min-height:230px}.principle-grid h3{margin-top:48px}.process-grid>li{min-height:285px}
  .fact-ribbon{grid-template-columns:1fr 1fr}.fact-ribbon>div,.fact-ribbon>div:first-child,.fact-ribbon>div:last-child{padding:25px}.fact-ribbon>div:nth-child(2){border-right:0}.fact-ribbon>div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .contact-panel{grid-template-columns:1fr;align-items:start}.contact-side{margin-top:2px}
}
@media(max-width:720px){
  :root{--gutter:20px}.site-header{height:64px}.header-login{padding-inline:12px}.theme-toggle{width:44px;height:44px}
  h1{font-size:clamp(2.65rem,12vw,3.25rem)}h2{font-size:2.2rem}.hero--home,.account-hero{padding-top:34px}.hero--home::before{background-size:44px 44px}.hero-copy{padding-bottom:42px}.hero-copy h1,.account-intro h1{font-size:clamp(2.65rem,12vw,3.25rem)}.price-hero h1 br,.account-intro h1 br{display:none}.hero__lede{font-size:1rem}.hero-status{margin-bottom:23px}.hero-fit{align-items:flex-start}.hero-fit strong{width:100%}.hero-actions{align-items:stretch;margin:27px 0 15px}.hero-actions .btn{width:100%}.hero-next{line-height:1.6}
  .product-panel{border-radius:15px;margin-bottom:0}.product-panel__head{padding:18px}.product-panel__head strong{max-width:240px}.live-badge{padding:4px 7px}.connection-path{padding-inline:18px}.connection-path__home em{display:none}.region-snapshot{grid-template-columns:1fr}.region-summary{min-height:128px}.capacity-caption{flex-direction:column;padding-inline:18px}.fact-ribbon{grid-template-columns:1fr}.fact-ribbon>div,.fact-ribbon>div:first-child,.fact-ribbon>div:last-child{min-height:0;padding:23px 0;border-right:0;border-bottom:1px solid var(--line)}.fact-ribbon>div:last-child{border-bottom:0}.fact-ribbon strong{margin-top:10px}
  .account-bottom__grid{grid-template-columns:1fr}.account-bottom__grid>div,.account-bottom__grid>div:first-child,.account-bottom__grid>div:last-child{padding:25px 0;border-right:0;border-bottom:1px solid var(--line)}.account-bottom__grid>div:last-child{border-bottom:0}
  .section{padding:74px 0}.principle-grid{margin-top:38px}.principle-grid article{min-height:0;padding:25px 22px}.principle-grid h3{margin-top:44px}.fit-board{grid-template-columns:1fr}.fit-list article{padding:22px 18px;grid-template-columns:30px 1fr}.fit-list b{grid-column:2;justify-self:start}.guardrail{padding:24px 20px}.process-grid{margin-top:38px}.process-grid>li{padding:25px 22px}.process-grid h3{margin-top:62px}.process-grid a{left:22px;bottom:24px}.boundary-list>article{padding-left:45px}.contact-panel{border-radius:15px;padding:30px 22px;gap:30px}.contact-actions .btn{width:100%}.faq-list details p{padding-right:0}
  .price-hero{padding:38px 0 32px}.price-hero h1{font-size:clamp(2.7rem,12.5vw,3.35rem)}.price-hero__grid{gap:22px}.open-status__inner{grid-template-columns:1fr;gap:8px;padding-block:16px}.region-grid{grid-template-columns:1fr}.region-heading{gap:18px;margin-bottom:30px}.region-card__body>p:last-child{min-height:0}.region-control-note{align-items:flex-start;flex-direction:column}.region-control-note b{margin:0}.section--plans{padding-top:60px}.plans-toolbar{display:block;margin-bottom:38px}.cycle{margin-top:22px;width:100%;display:grid;grid-template-columns:repeat(3,1fr)}.cycle button{padding-inline:8px}.plan{padding:25px 22px}.plan__price strong{font-size:3.5rem}.included-list>div{grid-template-columns:36px 1fr}.included-list p{grid-column:2}.contact-cards strong{overflow-wrap:anywhere}
  [data-page="account"] .account-service-grid{gap:25px}[data-page="account"] .account-intro{order:1}[data-page="account"] .account-service-panel{order:2;padding:25px 20px;border-radius:16px}[data-page="account"] .account-process{order:3;margin-top:10px}
  [data-page="download"] .download-grid{gap:32px}[data-page="download"] .download-intro{order:1}[data-page="download"] .release-panel{order:2;padding:25px 20px;border-radius:16px}[data-page="download"] .download-guidance{order:3}
  .account-intro h1,.download-intro h1{font-size:clamp(2.7rem,12.5vw,3.35rem)}.account-proof{display:grid}.account-bottom__grid{padding-block:10px}
  .site-footer__inner{grid-template-columns:1fr;gap:16px}.site-footer__inner>span{grid-column:auto}.site-footer nav{flex-wrap:wrap}.site-footer p{max-width:340px}
}
@media(max-width:380px){.theme-toggle{display:none}.site-header__inner{gap:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.btn:hover{transform:none}}

/* --- 上线前修正 --- */
/* A1 标题孤字 */
h1,h2{text-wrap:balance}
/* 禁用控件仍用文字说明，不单靠颜色表达状态。 */
.btn--disabled,.btn--disabled:hover{color:var(--muted)}
/* A3 点击热区（WCAG 2.2 SC 2.5.8 最小 24×24；交互控件按 44 给） */
.site-footer nav a{display:inline-flex;align-items:center;min-height:44px}
.cycle button{min-height:44px}
.theme-toggle{width:44px;height:44px}
.btn--sm{min-height:40px}
/* C4 签名徽章 */
.sig-badge{display:inline-flex;align-items:center;margin-left:.5em;padding:.1em .5em;
  border:1px solid var(--line-strong);border-radius:999px;font-size:.78em;
  color:var(--orange);border-color:color-mix(in srgb,var(--orange) 45%,transparent);
  background:color-mix(in srgb,var(--orange) 10%,transparent);white-space:nowrap}
/* A2 移动端导航：纯 CSS disclosure */
.nav-disclosure>summary{display:none}
@media(max-width:1160px){
  .nav-disclosure{position:relative;order:3;flex:none}
  .header-actions{order:2;margin-left:auto}
  .nav-disclosure>summary{list-style:none;width:44px;height:44px;display:grid;
    place-items:center;cursor:pointer;color:inherit}
  .nav-disclosure>summary::-webkit-details-marker{display:none}
  .nav-disclosure .nav{display:none}
  .nav-disclosure[open] .nav{display:flex;flex-direction:column;gap:0;
    position:absolute;right:0;top:calc(100% + 8px);min-width:230px;z-index:60;
    padding:8px 16px;background:var(--paper);
    border:1px solid var(--line);border-radius:12px;
    box-shadow:0 18px 44px rgba(17,24,22,.16)}
  .nav-disclosure[open] .nav a{min-height:44px;display:flex;align-items:center}
  .nav-disclosure[open] .nav a::after{bottom:4px}
}
/* A5 状态点呼吸环（只走合成层；reduced-motion 已由全局 * 规则兜底） */
/* 呼吸环：只缩放，淡度烘进颜色里，不用 opacity 淡出（见文末铁律 2）。
   动画不跑时它就是一枚盖在状态点上的同色浅盘，看不出差别。 */
@keyframes hp-ring{0%,100%{transform:scale(1)}50%{transform:scale(2.1)}}
.signal-dot{position:relative}
.signal-dot::after{content:"";position:absolute;inset:0;border-radius:50%;
  background:color-mix(in srgb,currentColor 26%,transparent);pointer-events:none}
@media (prefers-reduced-motion: no-preference){
  .signal-dot::after{animation:hp-ring 2.8s ease-in-out infinite}
}

/* --- 下单页（buy）：结算流程与券选择 ---------------------------------------
   只用既有令牌（--paper/--line/--blue/--green/--muted/--radius），不引入新变量、
   不引入任何外部依赖。选项一律是原生 radio + label：label 的点击热区就是整张卡，
   天然满足 44px，而且键盘、读屏与「无 JS」三条路都不用另写一遍。 */
.section--checkout{padding-top:clamp(48px,6vw,72px)}
.checkout{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,380px);gap:28px;align-items:start}
.co-form{min-width:0}
.co-step{min-width:0;margin:0 0 18px;padding:clamp(20px,2.6vw,30px);border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}
.co-step>legend{float:left;width:100%;padding:0;margin:0 0 4px;font-size:1.15rem;font-weight:600}
.co-step>legend+*{clear:both}
.co-step__index{display:block;margin-bottom:9px;font-family:var(--mono);font-size:.65rem;font-weight:400;letter-spacing:.1em;color:var(--muted)}
.co-step__hint{margin:0 0 18px;color:var(--muted);font-size:.83rem;line-height:1.65}
.co-opts{display:grid;gap:10px}
.co-opts--2{grid-template-columns:1fr 1fr}
.co-opts--3{grid-template-columns:repeat(3,1fr)}
.co-opt{display:flex;flex-direction:column;gap:4px;min-height:44px;height:100%;
  padding:15px 17px;border:1px solid var(--line);border-radius:12px;
  background:var(--canvas);cursor:pointer;transition:border-color .18s,background .18s}
.co-opt strong{font-size:.95rem}
.co-opt span{color:var(--muted);font-size:.76rem;line-height:1.55}
.co-opt:hover{border-color:var(--line-strong)}
.co-opt-wrap>input:checked+.co-opt{border-color:var(--blue);background:var(--blue-soft);box-shadow:inset 0 0 0 1px var(--blue)}
.co-opt-wrap>input:focus-visible+.co-opt{outline:2px solid var(--focus);outline-offset:2px}
.co-opt-wrap>input:disabled+.co-opt{cursor:not-allowed;background:var(--paper-2);color:var(--muted);opacity:.62}
.co-opt-wrap>input:disabled+.co-opt:hover{border-color:var(--line)}
.co-step.is-off .co-opts{opacity:.55}
.co-opt--plan{min-height:150px}
.co-opt__devices{font-family:var(--mono);font-size:.66rem!important;letter-spacing:.06em;color:var(--green)!important}
.co-opt__price{margin-top:auto;color:var(--ink)!important;font-size:.9rem!important}
.co-opt__price b{font-size:1.65rem;letter-spacing:-.03em}
.co-opt__price em{font-style:normal;color:var(--muted);font-size:.72rem}
.co-opt__note{font-size:.72rem!important}
.co-opt__cycle-price s{color:var(--muted);margin-right:6px}
.co-off{display:inline-block;padding:1px 7px;border:1px solid var(--green);border-radius:999px;
  font-family:var(--mono);font-size:.66rem;color:var(--green)}
.co-guest{margin-top:4px;padding:18px 20px;border:1px dashed var(--line-strong);border-radius:12px;background:var(--canvas)}
.co-guest strong{display:block;font-size:.95rem}
.co-guest p{margin:7px 0 14px;font-size:.8rem;line-height:1.7}
.co-coupons{display:grid;gap:10px}
.co-coupon{display:grid;grid-template-columns:1fr auto;gap:4px 14px;align-items:center;
  min-height:44px;padding:14px 17px;border:1px solid var(--line);border-radius:12px;
  background:var(--canvas);cursor:pointer}
.co-coupon strong{font-size:.9rem}
.co-coupon .co-coupon__why,.co-coupon .co-coupon__meta{grid-column:1/-1;color:var(--muted);font-size:.74rem}
.co-coupon__save{font-family:var(--mono);font-size:.86rem;color:var(--green);white-space:nowrap}
.co-coupon-wrap>input:checked+.co-coupon{border-color:var(--blue);background:var(--blue-soft);box-shadow:inset 0 0 0 1px var(--blue)}
.co-coupon-wrap>input:focus-visible+.co-coupon{outline:2px solid var(--focus);outline-offset:2px}
.co-coupon-wrap>input:disabled+.co-coupon{cursor:not-allowed;background:var(--paper-2);opacity:.7}
.co-coupon-wrap>input:disabled+.co-coupon strong{color:var(--muted);text-decoration:line-through}
.co-summary{min-width:0}
.co-summary__inner{position:sticky;top:88px;padding:clamp(20px,2.6vw,28px);
  border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}
.co-summary h2{font-size:1.15rem;margin:0 0 16px}
.co-ledger{margin:0;padding:16px 0 0;border-top:1px solid var(--line)}
.co-ledger__row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin:0 0 11px}
.co-ledger__row dt{color:var(--muted);font-size:.8rem}
.co-ledger__row dd{margin:0;text-align:right;font-size:.85rem;overflow-wrap:anywhere}
.co-ledger__row--money dd{font-family:var(--mono)}
.co-ledger__row--cut dd{color:var(--green)}
.co-ledger__row--total{margin:0;padding-top:13px;border-top:1px solid var(--line)}
.co-ledger__row--total dt{color:var(--ink);font-weight:600;font-size:.9rem}
.co-ledger__row--total dd{font-family:var(--mono);font-size:1.5rem;font-weight:600;letter-spacing:-.02em}
.co-ledger__src{margin:14px 0 0;color:var(--muted);font-size:.72rem;line-height:1.6}
.co-actions{margin-top:18px;display:grid;gap:10px}
.co-actions .hint{margin:0;font-size:.74rem;line-height:1.6}
.co-pay{margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
.co-pay__title{margin:0 0 12px;font-weight:600;font-size:.92rem}
.co-pay__amount{display:flex;align-items:baseline;gap:10px;margin-bottom:14px}
.co-pay__amount span{color:var(--muted);font-size:.78rem}
.co-pay__amount strong{font-family:var(--mono);font-size:1.85rem;letter-spacing:-.02em}
.co-qr{display:grid;place-items:center;padding:14px;background:#fff;border:1px solid var(--line);border-radius:12px}
.co-qr img{display:block;width:min(240px,100%);height:auto;image-rendering:pixelated}
.co-qr p{margin:0;padding:24px 8px;color:var(--muted);font-size:.78rem;text-align:center}
.co-pay__meta{margin:10px 0 0;color:var(--muted);font-size:.74rem;overflow-wrap:anywhere}
.co-pay__state{margin:12px 0 14px;font-size:.85rem;font-weight:600}
.co-pay.is-stale .co-qr,.co-pay.is-stale .co-pay__amount{opacity:.42}
.co-pay__state.is-paid{color:var(--green)}
.co-pay__state.is-dead{color:var(--red)}
@media(max-width:1000px){
  .checkout{grid-template-columns:1fr;gap:20px}
  .co-summary__inner{position:static}
}
@media(max-width:720px){
  .section--checkout{padding-top:36px}
  .co-opts--2,.co-opts--3{grid-template-columns:1fr}
  .co-opt--plan{min-height:0}
  .co-opt__price{margin-top:6px}
  .co-step{padding:20px 18px;border-radius:16px}
  .co-summary__inner{padding:20px 18px;border-radius:16px}
  .co-guest .btn{width:100%}
}

/* =============================================================================
 * 水墨层 —— 方塘网络（Fangtang Network）
 *
 * 与同机的「方塘 · Fangtang API」（/home/admin/hetune-web）同一套设计语言。
 * 令牌出处、取值与取舍见同目录 NOTES-REBRAND.md。
 *
 * 铁律 1：本站无 Tailwind 编译步骤，只写真实 CSS。
 * 铁律 2：本文件任何一条规则都不把 opacity 设成 0。入场动画只动 transform，
 *         animation-fill-mode:both 期间元素照样在原位可见 —— 把文件末尾那段
 *         @media (prefers-reduced-motion: no-preference) 整个删掉，
 *         页面内容一个字都不会少。
 * ========================================================================== */

/* ---- 宣纸底：两团淡墨 + 一层噪点。纯装饰，渲染失败只是退回纯色纸 ---- */
body{
  background-color:var(--canvas);
  background-image:
    radial-gradient(ellipse 120% 72% at 82% -8%,color-mix(in srgb,var(--green) 11%,transparent),transparent 62%),
    radial-gradient(ellipse 96% 64% at 4% 14%,color-mix(in srgb,var(--ink) 7%,transparent),transparent 60%),
    var(--wash);
  background-repeat:no-repeat,no-repeat,repeat;
  background-size:auto,auto,200px 200px;
  line-height:1.72;
}

/* ---- 字体：中文标题走宋体，技术信息走等宽 ---- */
h1,h2{font-family:var(--serif);font-weight:500;text-wrap:balance}
h1{font-size:clamp(2.2rem,3.5vw,3.5rem);line-height:1.32;letter-spacing:.05em}
h2{font-size:clamp(1.75rem,2.9vw,2.75rem);line-height:1.42;letter-spacing:.045em}
h3{font-size:1.16rem;line-height:1.5;letter-spacing:.012em}
.hero-copy h1,.price-hero h1,.account-intro h1,.download-intro h1,
[data-page="account"] .account-intro h1,[data-page="download"] .download-intro h1{
  font-size:clamp(2.3rem,3.6vw,3.6rem);line-height:1.3;letter-spacing:.055em}
.account-service-panel__head h2,.release-panel__head h2,.co-summary h2,.co-step>legend{
  font-family:var(--serif);font-weight:500;letter-spacing:.05em}
.region-card__body h3{font-family:var(--serif);font-weight:500;letter-spacing:.06em;
  font-size:clamp(1.4rem,2.1vw,1.95rem);line-height:1.35}

/* ---- 眉题：等宽小字 + 一道细墨线（对齐 .homepool-pricing-eyebrow） ---- */
.kicker,.section-index,.panel-eyebrow{
  font-family:var(--mono);font-size:.68rem;font-weight:700;letter-spacing:.19em;text-transform:uppercase}
.kicker,.section-index{gap:.85rem}
.kicker::after,.section-index::after{
  content:"";flex:1;max-width:130px;height:1px;
  background:color-mix(in srgb,currentColor 34%,transparent)}

/* ---- 圆角：整体收方，向印章与册页靠 ---- */
.btn{border-radius:7px}
.product-panel,.contact-panel,.region-card,
[data-page="account"] .account-service-panel,[data-page="download"] .release-panel{border-radius:14px}
.plan,.co-step,.co-summary__inner,.card,.callout,.principle-grid article{border-radius:12px}
.co-opt,.co-coupon,.co-guest,.region-control-note,.co-qr{border-radius:9px}
.platform,.notice,.install-note,.node-icon,.skip-link{border-radius:8px}
.hero-fit span,.principle-grid article>span,.fit-list b{border-radius:5px}

/* ---- 品牌：朱砂印章 + 方塘网络 ---- */
.brand{gap:11px;font-family:var(--serif);font-size:1.04rem;font-weight:500;letter-spacing:.14em}
.brand__seal{
  display:grid;place-items:center;flex:none;width:27px;height:27px;
  border:1px solid color-mix(in srgb,var(--seal) 70%,transparent);border-radius:6px;
  background:color-mix(in srgb,var(--seal) 7%,transparent);color:var(--seal);
  font-family:var(--serif);font-size:.94rem;font-weight:500;line-height:1;letter-spacing:0}
.brand__name{white-space:nowrap}
.brand__latin{
  font-family:var(--mono);font-size:.55rem;font-weight:700;letter-spacing:.2em;
  color:var(--muted);text-transform:uppercase;align-self:center;
  padding-left:10px;border-left:1px solid var(--line)}

/* ---- 首屏：科技网格换成淡界格，橙色光斑换成一团松墨 ---- */
.hero--home::before{
  background-image:
    linear-gradient(90deg,color-mix(in srgb,var(--line-strong) 20%,transparent) 1px,transparent 1px),
    linear-gradient(color-mix(in srgb,var(--line-strong) 16%,transparent) 1px,transparent 1px);
  background-size:96px 96px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.32),transparent 78%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.32),transparent 78%)}
.hero--home::after{
  width:560px;height:560px;right:-240px;top:-250px;
  background:radial-gradient(circle,color-mix(in srgb,var(--green) 15%,transparent),transparent 68%);
  filter:blur(8px)}

/* ---- 数字：等宽表格数字，价格是这几页最该被看清的东西 ---- */
.plan__price strong,.plan__price>span,.region-card__body>strong,.co-opt__price b,
.co-ledger__row--total dd,.co-pay__amount strong{
  font-family:var(--mono);font-variant-numeric:tabular-nums}
.plan__price strong{font-size:clamp(2.4rem,3.4vw,3.4rem);letter-spacing:-.03em;font-weight:700}
.region-card__body>strong{font-size:clamp(2.5rem,3.7vw,3.7rem);letter-spacing:-.03em;font-weight:700}

/* ---- 卡面：厚阴影换一道细墨边；选中态用内描边，不改边框宽度（不跳位） ---- */
.principle-grid article,.plan,.region-card,.card,.callout,.co-step,.co-summary__inner{box-shadow:none}
[data-page="account"] .account-service-panel,[data-page="download"] .release-panel{
  box-shadow:0 18px 44px rgba(40,40,37,.07)}
.plan--featured{border:1px solid var(--green);
  box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--green) 36%,transparent)}
.region-card--active{border:1px solid var(--green);
  box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--green) 32%,transparent)}
.region-card--disabled::after{background:color-mix(in srgb,var(--ink) 14%,var(--paper-2));color:var(--ink);letter-spacing:.14em}
.site-header.is-stuck{box-shadow:none;border-bottom-color:var(--line)}
.sig-badge{border-width:1px;border-style:solid}

/* ---- 联系面板：整块松墨绿换成宣纸卡 + 墨色按钮 ---- */
.contact-panel{background:var(--paper);color:var(--ink);border:1px solid var(--line)}
.contact-panel::after{
  border-color:color-mix(in srgb,var(--green) 26%,transparent);
  box-shadow:0 0 0 66px color-mix(in srgb,var(--green) 4%,transparent)}
.contact-panel p{color:var(--muted)}
.contact-panel .btn--ink{background:var(--ink);color:var(--canvas);border-color:var(--ink)}
.contact-panel .btn--ink:hover{background:var(--green);border-color:var(--green);color:var(--canvas)}
.contact-panel .btn--ghost{border-color:var(--line-strong);color:var(--ink)}
.contact-panel .btn--ghost:hover{background:var(--paper-2);color:var(--ink);border-color:var(--ink)}
.contact-meta span::before{color:var(--orange)}
.contact-cards{background:var(--line);border:1px solid var(--line)}
.contact-cards>*{background:var(--canvas);color:var(--ink)}
.contact-cards small{color:var(--muted)}

/* ---- 交互：位移收到 1px，水墨要静 ---- */
.btn:hover{transform:translateY(-1px)}
.theme-toggle:hover{background:var(--paper);border-color:var(--line-strong)}
.nav a::after{background:var(--orange)}

/* =============================================================================
 * 入场动画 —— 只动 transform，一条规则都不碰 opacity。
 *
 * 为什么不用 IntersectionObserver + .reveal：观察器不触发（视口高度 0、脚本
 * 报错、浏览器差异）时，默认 opacity:0 的内容会永久空白。本项目踩过一次。
 * 现在的写法里，动画完全不跑 = 元素停在 translateY(15px)，照样看得见。
 *
 * 验收判据：把下面这整段 @media 删掉，五个页面内容完整不变。
 * ========================================================================== */
@media (prefers-reduced-motion: no-preference){
  @keyframes hp-rise{from{transform:translateY(15px)}to{transform:translateY(0)}}
  @keyframes hp-settle{from{transform:translateY(18px) scale(.988)}to{transform:none}}
  @keyframes hp-draw{from{transform:scaleX(.86)}to{transform:scaleX(1)}}
  @keyframes hp-seal{from{transform:scale(.86)}to{transform:scale(1)}}

  .hero-status,.hero-copy h1,.hero__lede,.hero-fit,.hero-actions,.hero-next,
  .price-hero h1,.account-intro h1,.download-intro h1{
    animation:hp-rise .68s cubic-bezier(.16,1,.3,1) both}
  .hero-copy h1{animation-delay:.06s}
  .hero__lede{animation-delay:.12s}
  .hero-fit{animation-delay:.17s}
  .hero-actions{animation-delay:.22s}
  .hero-next{animation-delay:.27s}

  .product-panel{animation:hp-settle .82s cubic-bezier(.16,1,.3,1) .1s both}
  .fact-ribbon>div{animation:hp-rise .66s cubic-bezier(.16,1,.3,1) both}
  .fact-ribbon>div:nth-child(2){animation-delay:.06s}
  .fact-ribbon>div:nth-child(3){animation-delay:.12s}
  .fact-ribbon>div:nth-child(4){animation-delay:.18s}

  .kicker::after,.section-index::after{
    transform-origin:left center;
    animation:hp-draw .8s cubic-bezier(.16,1,.3,1) .12s both}
  .brand__seal{animation:hp-seal .7s cubic-bezier(.16,1,.3,1) both}
}

/* ---- 小屏 ---- */
@media(max-width:720px){
  .brand__latin{display:none}
  .brand{font-size:.96rem;letter-spacing:.1em;gap:9px}
  h1{font-size:clamp(2rem,8.4vw,2.55rem);letter-spacing:.045em}
  h2{font-size:clamp(1.6rem,6.6vw,2rem);letter-spacing:.04em}
  .hero-copy h1,.price-hero h1,.account-intro h1,.download-intro h1,
  [data-page="account"] .account-intro h1,[data-page="download"] .download-intro h1{
    font-size:clamp(2rem,8.6vw,2.6rem);letter-spacing:.05em}
  .plan__price strong,.region-card__body>strong{font-size:2.5rem}
  .product-panel,.contact-panel,
  [data-page="account"] .account-service-panel,[data-page="download"] .release-panel{border-radius:12px}
  .kicker::after,.section-index::after{max-width:64px}
}