/* 《看不见的规则》· 编辑式滚动叙事 —— 基础=完全静态可读，动效=增强层 */
:root{
  --paper:#f2e6cf; --paper-2:#fbf7ef; --ink:#26241f; --muted:#8b8478;
  --green:#3f5f52; --green-2:#2e4a3f; --deep:#0e1622; --deep-2:#101820;
  --sea-top:#16455e; --sea-deep:#06121f; --accent:#c96f4a; --line:#e2d9c8;
  --pad-x:clamp(20px,6vw,88px);
  --serif:"Songti SC","STSong","SimSun",serif;
  --sans:-apple-system,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{margin:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:clip}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 var(--pad-x)}
.wrap.narrow{max-width:720px}
.chapter{padding:clamp(64px,11vh,128px) 0}
.stanza{margin:0 0 1.1em;max-width:640px;font-size:clamp(15px,1.6vw,17px)}
.stanza em{font-style:normal;color:var(--green-2);font-weight:600}

/* —— 章节排队时揭示小部件 —— */
[data-anim]{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.9,.35,1)}
[data-anim].revealed{opacity:1;transform:none}
.reduced [data-anim]{opacity:1;transform:none;transition:none}
.reduced #qTop,.reduced #holdNote,.reduced .press{opacity:1}

/* —— 进度 rail 与章节标签 —— */
.rail{position:fixed;right:22px;top:14vh;height:72vh;width:2px;background:#0002;z-index:60}
.rail-dot{position:absolute;left:50%;top:0;width:8px;height:8px;border-radius:50%;background:var(--accent);transform:translate(-50%,0);box-shadow:0 0 0 4px #c96f4a22}
.chap-tag{position:fixed;left:24px;top:22px;z-index:60;font-size:12px;letter-spacing:.24em;color:var(--muted);background:#f2e6cfd9;border:1px solid var(--line);padding:6px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.reduced .chap-tag{display:none}
.reduced .rail{display:none}

/* —— 通用章节头 —— */
.ch-head{display:flex;align-items:baseline;gap:16px;margin-bottom:clamp(20px,4vh,40px)}
.ch-head h2{font-family:var(--serif);font-size:clamp(26px,4.4vw,44px);letter-spacing:.05em;font-weight:700}
.ch-no{font-family:var(--serif);font-size:clamp(20px,3vw,30px);color:var(--accent);opacity:.9}
.ch-no-inline{font-family:var(--serif);font-size:20px;color:var(--accent);letter-spacing:.2em}

/* —— S0 hero —— */
.hero{position:relative;min-height:100vh;display:grid;align-items:center;padding:0;overflow:clip}
.vis{position:relative;overflow:hidden}
.vis.cover{position:absolute;inset:0}
.vis.cover img{width:100%;height:100%;object-fit:cover}
.ph-grad{position:absolute;inset:0;opacity:.5}
.vis.no-img .ph-grad{opacity:1}
.vis.cover img{position:relative;z-index:2;transition:opacity .4s}
.sea-far .ph-grad{opacity:.55;z-index:3}.g-warm{background:
  radial-gradient(120% 90% at 80% 10%, #e9c89a33 0%, transparent 60%),
  linear-gradient(180deg,#d9b184 0%,#b9834a 45%,#7e5226 100%)}
.g-warm::after{content:"示例图位 · 待替换";position:absolute;right:18px;top:16px;font-size:11px;color:#f2e6cfcc;letter-spacing:.15em;border:1px solid #f2e6cf55;padding:3px 9px;border-radius:999px}
.g-sea{background:\n  linear-gradient(115deg, transparent 42%, #9fc7db12 46%, transparent 52%, #9fc7db20 60%, transparent 68%, #9fc7db10 74%, transparent 82%),\n  linear-gradient(180deg,#f2e6cf 0%,#16455e 20%,#0d2c40 58%,#06121f 100%)}
.g-sea::after{content:"示例图位 · 待替换";position:absolute;right:18px;top:16px;font-size:11px;color:#f2e6cf99;letter-spacing:.15em;border:1px solid #f2e6cf44;padding:3px 9px;border-radius:999px}
.g-food{background:linear-gradient(135deg,#e8dcc3,#c9ae85)}
.hero-inner{position:relative;z-index:2;color:#fdf9f0;padding-top:18vh;padding-bottom:10vh;text-shadow:0 2px 28px #241a0dbb}
.kicker{font-size:12px;letter-spacing:.34em;opacity:.85;margin-bottom:18px}
.display{font-family:var(--serif);font-size:clamp(44px,9.4vw,116px);line-height:1.12;letter-spacing:.04em;font-weight:700}
.display em{font-style:normal;color:#f4cba1}
.lede{margin-top:26px;max-width:30em;font-size:clamp(16px,1.8vw,19px);line-height:2;opacity:.95}
.scroll-cue{margin-top:7vh;font-size:12px;letter-spacing:.3em;display:inline-flex;align-items:center;gap:12px;opacity:.85}
.cue-line{display:inline-block;width:1px;height:52px;background:linear-gradient(#fdf9f0,transparent);animation:cue 1.8s ease-in-out infinite}
@keyframes cue{0%{transform:scaleY(.2);transform-origin:top}50%{transform:scaleY(1)}100%{transform:scaleY(.2)}}
.reduced .cue-line{animation:none;transform:none}

/* —— S1 三板块 —— */
.tri-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--paper-2);border:1px solid var(--line);border-radius:16px;padding:26px 24px;min-height:210px;position:relative}
.card h3{font-family:var(--serif);font-size:19px;margin:10px 0 10px;letter-spacing:.06em}
.card p{font-size:14px;color:#57534a;line-height:1.85}
.card-no{font-family:var(--serif);font-size:15px;color:var(--accent);border:1px solid #c96f4a55;border-radius:999px;padding:2px 12px;position:absolute;top:20px;right:20px;letter-spacing:.2em}

/* —— S2 why —— */
.ch-head-green h2{color:var(--green-2)}
.watch-list{list-style:none;margin-top:8px;display:grid;gap:12px;max-width:640px}
.watch-list li{background:var(--paper-2);border-left:3px solid var(--green);border-radius:0 12px 12px 0;padding:14px 18px;font-size:15px}
.watch-list b{font-family:var(--serif);color:var(--green-2);margin-right:10px;letter-spacing:.2em}
.why{background:linear-gradient(180deg,var(--paper) 0%, #e9e0cf 100%)}

/* —— pin 区块通用 —— */
.pinblock{position:relative}
.stage{height:100vh;display:grid;align-items:center;overflow:hidden;position:relative}
.reduced .pinblock{height:auto!important}
.reduced .stage{height:auto;padding:clamp(56px,9vh,110px) var(--pad-x)}

/* —— S3 握手 —— */
.hand{height:320vh;background:linear-gradient(180deg,#e9e0cf,var(--paper-2))}
.hand-stage{width:min(92vw,880px);margin:0 auto;position:relative}
.hand-kicker{position:absolute;top:-9vh;left:0;right:0;text-align:center;font-size:12px;letter-spacing:.22em;color:var(--muted)}
.hand-stage svg{width:100%}
.hand-notes{background:var(--paper-2)}
.rule-fan{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 30px}
.rule-fan span{border:1px solid var(--line);background:#fff9;border-radius:999px;padding:8px 16px;font-size:14px;color:#57534a}
.q-card{border:1px solid var(--line);border-left:4px solid var(--accent);background:var(--paper-2);border-radius:14px;padding:26px 28px;margin-top:12px}
.q-card h3{font-family:var(--serif);font-size:18px;letter-spacing:.12em;color:var(--green-2);margin-bottom:10px}
.q-card p{font-size:15px;color:#3e3a33;margin-bottom:8px;max-width:38em}
.redline{font-size:12px;color:#a08c7c;border-top:1px dashed #d8cbb4;padding-top:10px;margin-top:8px}

/* —— S4 手机章节 —— */
.phoneSec{height:420vh;background:var(--deep)}
.phoneSec .stage{background:linear-gradient(180deg,#0e1622,#17212c)}
.morph-box{position:absolute;inset:0;display:grid;place-items:center}
.paper{width:min(88vw,980px);height:80vh;background:#fbf7ef;border-radius:10px;box-shadow:0 24px 80px #0006;
  position:relative;display:grid;place-items:start stretch;overflow:hidden;will-change:transform}
.sitebar{position:absolute;top:0;left:0;right:0;display:flex;gap:10px;align-items:center;padding:15px 24px;border-bottom:1px solid #e6ddcc;font-size:13px;color:#8a8177;background:#fbf7ef}
.sample-flag{position:absolute;top:58px;right:16px;font-size:11px;color:#b3573f;border:1px solid #e4b7a4;background:#fdf1ea;padding:3px 10px;border-radius:999px;z-index:5}
.article{padding:64px clamp(20px,5vw,64px) 20px;overflow:hidden}
.article h1{font-family:var(--serif);font-size:clamp(22px,3.2vw,34px);margin-bottom:10px}
.article .by{font-size:12px;color:#a89f92;margin-bottom:20px}
.article p{font-size:15px;line-height:1.95;color:#4a443c;margin-bottom:14px;max-width:52em}
.phoneFrame{position:absolute;left:50%;top:50%;translate:-50% -50%;width:min(86vw,340px);height:min(80vh,680px);
  background:var(--deep-2);border-radius:44px;border:10px solid #14161a;
  box-shadow:0 26px 70px #0007, inset 0 0 0 2px #f2e6cf12;opacity:0}
.phoneScreen{position:absolute;inset:10px;border-radius:34px;overflow-y:auto;background:#101820;color:#e8e3da}
.ph-head{position:sticky;top:0;background:#101820ee;padding:14px 16px 10px;font-size:14px;border-bottom:1px solid #f2e6cf14}
.ph-list{padding:12px 14px 20px;display:grid;gap:10px}
.ph-card{background:#18222e;border-radius:14px;padding:12px 14px;font-size:13px;line-height:1.7}
.ph-card.anti{background:#221a14}
.ph-card .who{font-size:11px;color:#92887a;display:block;margin-bottom:6px}
.ph-card .flag{font-style:normal;font-size:10px;color:#e0b190;border:1px solid #6b5544;border-radius:999px;padding:1px 8px;margin-left:6px}
.ph-note{background:#16292a;border-radius:14px;padding:14px;font-size:13px;line-height:1.8}
.phone-side{position:absolute;left:clamp(18px,5vw,80px);top:50%;translate:0 -50%;max-width:300px;color:#d6cdbd;z-index:3}
.side-line{font-size:clamp(14px,1.5vw,17px);line-height:2;opacity:0;margin-top:18px}
.side-line br{display:block;margin:6px 0}
.phoneSec .stage .ch-no-inline{position:absolute;left:clamp(18px,5vw,80px);top:12vh}
.phoneSec .phone-side .ch-no-inline{position:static;margin-bottom:10px}
.phone-notes{background:var(--deep);color:#e8e3da}
.phone-notes .q-card{background:#131c26;border-color:#2a3743;color:#d9d2c6}
.phone-notes .q-card h3{color:#9fd8c9}
.phone-notes .redline{color:#a08c7c;border-color:#3a4652}

/* —— S5 椰子 —— */
.coconutSec{height:340vh;background:var(--green-2)}
.coconutSec .stage{background:var(--green-2)}
.coco-stage{width:min(92vw,760px);text-align:center;margin:0 auto}
.coco-kicker{font-size:12px;letter-spacing:.3em;color:#cfe3d6;margin-bottom:2vh}
.coco-stage svg{width:100%}
.coco-sub{margin-top:2vh;font-size:13px;letter-spacing:.2em;color:#b9ccc0;opacity:.7}

/* —— S6 美食 —— */
.food{background:linear-gradient(180deg,#2e4a3f 0%, #3f5f52 30%, var(--paper) 96%)}
.food .ch-head h2{color:#f2e6cf}
.food .ch-no{color:#e8b98d}
.chain{display:flex;align-items:stretch;gap:10px;margin:8px 0 28px;flex-wrap:wrap}
.chain-node{flex:1;min-width:120px;background:#f2e6cf14;border:1px solid #f2e6cf30;border-radius:14px;padding:16px;color:#e7e2d5;backdrop-filter:blur(2px)}
.chain-node .chain-t{display:block;font-family:var(--serif);font-size:17px;letter-spacing:.14em;margin-bottom:6px}
.chain-node .chain-d{font-size:12px;color:#d6cdbd;opacity:.85}
.chain-arrow{align-self:center;color:#f2e6cf55;font-size:20px}
.food-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:26px 0 8px}
.food-card{background:var(--paper-2);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.food-visual{position:relative;height:190px;overflow:hidden}
.food-visual img{position:relative;width:100%;height:100%;object-fit:cover;z-index:2}
.food-card figcaption{padding:16px 18px 20px}
.food-card b{font-family:var(--serif);font-size:16px;letter-spacing:.08em;display:block;margin-bottom:6px}
.food-card span{font-size:13px;color:#57534a;line-height:1.8}
.src-note{font-size:12px;color:#9a938a;margin:14px 0 8px}

/* —— S7 海洋 —— */
.seaSec{height:420vh}
.sea-stage{background:#0d2c40}
.sea-far{position:absolute;inset:0}
.sea-far img{position:relative;z-index:2;width:100%;height:100%;object-fit:cover;opacity:.9}
.bubbles{position:absolute;inset:0;pointer-events:none;z-index:2}
.bubbles i{position:absolute;bottom:-4vh;border-radius:50%;background:radial-gradient(circle at 30% 30%, #bfe3f288, #6fa3bd22 70%, transparent);width:12px;height:12px;animation:bub linear infinite}
.bubbles i:nth-child(1){left:8%;animation-duration:7s}
.bubbles i:nth-child(2){left:19%;width:6px;height:6px;animation-duration:9s;animation-delay:-3s}
.bubbles i:nth-child(3){left:31%;width:16px;height:16px;animation-duration:6s;animation-delay:-1s}
.bubbles i:nth-child(4){left:44%;width:8px;height:8px;animation-duration:11s;animation-delay:-5s}
.bubbles i:nth-child(5){left:57%;animation-duration:8s;animation-delay:-2s}
.bubbles i:nth-child(6){left:68%;width:6px;height:6px;animation-duration:12s;animation-delay:-7s}
.bubbles i:nth-child(7){left:79%;width:14px;height:14px;animation-duration:6.5s;animation-delay:-4s}
.bubbles i:nth-child(8){left:90%;width:9px;height:9px;animation-duration:9.5s;animation-delay:-6s}
.bubbles i:nth-child(9){left:12%;width:9px;height:9px;animation-duration:10s;animation-delay:-8s}
.bubbles i:nth-child(10){left:38%;width:5px;height:5px;animation-duration:13s;animation-delay:-9s}
@keyframes bub{0%{transform:translateY(0);opacity:0}12%{opacity:.75}86%{opacity:.5}100%{transform:translateY(-108vh);opacity:0}}
.reduced .bubbles{display:none}
.sea-boat{position:absolute;left:50%;bottom:16vh;translate:-50% 0;width:min(70vw,760px);opacity:.95;border-radius:18px;overflow:hidden;background:linear-gradient(135deg,#223a4d,#132030)}
.sea-boat::after{content:"预告素材 · 渔港清晨（待替换）";position:absolute;left:16px;bottom:12px;z-index:1;font-size:11px;color:#f2e6cf88;letter-spacing:.14em;border:1px solid #f2e6cf33;padding:3px 9px;border-radius:999px}
.sea-boat img{position:relative;z-index:2;width:100%}
.sea-ui{position:absolute;left:clamp(20px,6vw,90px);top:16vh;color:#e8e3da;z-index:3}
.depth-num{font-family:var(--serif);font-size:clamp(40px,6vw,74px);color:#f4cba1;line-height:1;margin:14px 0 22px}
.depth-num small{font-size:.4em;margin-left:6px;opacity:.7}
.sea-line{font-size:clamp(15px,1.8vw,19px);line-height:1.95;max-width:22em;margin-bottom:16px;opacity:0}
.sea-notes{background:linear-gradient(180deg,#06121f,var(--paper))}

/* —— S8 结尾 —— */
.end{background:var(--paper)}
.end .vis.cover.slim{position:relative;height:44vh;border-radius:0}
.plan-list{list-style:none;display:grid;gap:12px;max-width:680px;margin:6px 0 26px}
.plan-list li{background:var(--paper-2);border:1px solid var(--line);border-radius:12px;padding:14px 18px;font-size:15px}
.plan-list b{font-family:var(--serif);color:var(--green-2);letter-spacing:.08em;margin-right:8px}
.cred{font-size:14px;color:#57534a;max-width:640px}
.cred b{color:var(--green-2)}
.colophon{margin-top:48px;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:8px;font-size:12px;color:#9a938a}

/* —— 响应式 —— */
@media (max-width:860px){
  .tri-grid{grid-template-columns:1fr}
  .card{min-height:0}
  .food-grid{grid-template-columns:1fr}
  .phone-side{position:static;translate:none;padding:18px var(--pad-x) 0;margin-bottom:2vh}
  .phoneSec .stage{display:block;padding-top:10vh}
  .morph-box{position:relative;inset:auto;height:70vh}
  .paper{position:relative;width:92vw;height:90%}
  .chain{flex-direction:column}
  .chain-arrow{transform:rotate(90deg);align-self:center}
  .sea-boat{width:88vw;bottom:6vh}
  .sea-ui{top:10vh}
  .depth-num{font-size:40px}
}
@media (max-width:560px){
  .rail{right:10px}
  .chap-tag{left:14px;top:14px;font-size:10px}
  .hero-inner{padding-top:18vh}
}