/* ============================================================
   一羽一族 · 同心成凤 — 全局样式
   视觉体系对齐三张展板：深墨绿底 / 木棉红条带与胶囊 / 暖米留白 / 鎏金点缀 / 银灰(饰)
   动效：UI 200-350ms · 章节切换 600-900ms · 文化转译 800-1200ms · 成凤 4-6s
   ============================================================ */

:root{
  --bg:        #0f231e;   /* 深墨绿（展板底色） */
  --bg-2:      #14302a;   /* 墨绿浅一档 */
  --bg-3:      #1b3a32;
  --paper:     #f4ecdf;   /* 暖米 */
  --paper-dim: rgba(244,236,223,.6);
  --paper-faint: rgba(244,236,223,.34);
  --line:      rgba(232,240,233,.16);
  --line-soft: rgba(232,240,233,.09);
  --red:       #c9392b;   /* 展板木棉红 */
  --red-deep:  #9c2b1f;
  --gold:      #dcae52;   /* 鎏金 · 点缀 */
  --silver:    #c9cdd4;   /* 银灰 · 饰模块 */
  --silver-dim: rgba(201,205,212,.35);
  --serif: "Noto Serif SC","Source Han Serif SC","STSong","SimSun",serif;
  --sans:  "PingFang SC","Microsoft YaHei","Segoe UI",-apple-system,sans-serif;
  --t-ui: 260ms;
  --t-chapter: 720ms;
  --ease: cubic-bezier(.22,.61,.24,1);
  --safe-b: env(safe-area-inset-bottom, 0px);
  --ribbon-h: 22px;
}

*{ margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
html,body{ height:100%; }
body{
  font-family: var(--sans);
  background: var(--bg);
  color: var(--paper);
  overflow:hidden;
  line-height:1.7;
  -webkit-font-smoothing: antialiased;
}
button{ font-family: inherit; cursor:pointer; color:inherit; background:none; border:none; }
.hidden{ display:none !important; }

/* ---------- 噪点质感 ---------- */
.grain{
  position:fixed; inset:0; z-index:60; pointer-events:none; opacity:.05; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 展板同款红条带（顶部跑马灯） ---------- */
.ribbon{
  position:fixed; top:0; left:0; right:0; height:var(--ribbon-h); z-index:56;
  background:linear-gradient(90deg, var(--red-deep), var(--red) 30%, var(--red) 70%, var(--red-deep));
  overflow:hidden; display:flex; align-items:center;
  border-bottom:1px solid rgba(220,174,82,.35);
}
.ribbon-track{
  white-space:nowrap; flex:none; min-width:100%;
  animation:ribbon 80s linear infinite;
  font-family:var(--serif); font-size:10px; letter-spacing:.42em;
  color:rgba(255,246,236,.95);
}
.ribbon-track span{ padding-right:2.4em; }
@keyframes ribbon{ from{ transform:translateX(0);} to{ transform:translateX(-50%);} }
@media (prefers-reduced-motion: reduce){ .ribbon-track{ animation:none; } }

/* ---------- 全局固定元素 ---------- */
.chrome{ position:fixed; left:0; right:0; z-index:50; display:flex; align-items:center; padding:0 28px; }
.chrome.top{ top:var(--ribbon-h); height:60px; justify-content:space-between; }
.chrome.bottom{ bottom:0; height:58px; justify-content:space-between; padding-bottom:var(--safe-b); }
.logo{ display:flex; align-items:center; gap:9px; opacity:.85; cursor:pointer; user-select:none; }
.logo-mark{ width:22px; height:22px; color:var(--red); }
.logo-text{ font-family:var(--serif); font-size:15px; letter-spacing:.14em; }
.logo-text em{ font-style:normal; font-size:12px; color:var(--paper-dim); margin-left:2px; letter-spacing:.1em; }

.icon-btn{ width:38px; height:38px; border-radius:50%; border:1px solid var(--line); display:flex; align-items:center; justify-content:center; color:var(--paper-dim); transition:all var(--t-ui); }
.icon-btn:hover{ color:var(--paper); border-color:var(--paper-faint); }
.icon-btn svg{ width:18px; height:18px; }
.icon-btn.on{ color:var(--red); border-color:rgba(196,69,45,.5); }

/* 进度条 */
.stages{ display:flex; align-items:center; gap:10px; font-size:12px; color:var(--paper-faint); letter-spacing:.08em; }
.stage{ display:flex; align-items:center; gap:5px; transition:color var(--t-ui); }
.stage i{ font-family:var(--serif); font-style:normal; width:20px; height:20px; border:1px solid var(--line); border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:11px; transition:all var(--t-ui); }
.stage.done{ color:var(--paper-dim); }
.stage.done i{ background:var(--red); border-color:var(--red); color:var(--paper); }
.stage-sep{ width:14px; height:1px; background:var(--line); }
.chapter-name{ font-family:var(--serif); font-size:13px; letter-spacing:.3em; color:var(--paper-dim); }
.chapter-dots{ display:flex; gap:7px; }
.chapter-dots button{ width:7px; height:7px; border-radius:50%; background:var(--line); transition:all var(--t-ui); padding:0; }
.chapter-dots button:hover{ background:var(--paper-faint); }
.chapter-dots button.cur{ background:var(--red); transform:scale(1.35); }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:13px 34px; border-radius:999px; font-size:15px; letter-spacing:.24em; text-indent:.24em;
  border:1px solid var(--line); color:var(--paper); background:rgba(244,236,223,.04);
  transition:all var(--t-ui);
}
.btn:hover{ border-color:var(--paper-faint); background:rgba(244,236,223,.09); transform:translateY(-1px); }
.btn:disabled{ opacity:.28; cursor:not-allowed; transform:none; }
.btn.primary{ background:var(--red); border-color:var(--red); color:#fff7ef; }
.btn.primary:hover:not(:disabled){ background:var(--red-deep); border-color:var(--red-deep); }
.btn.ghost{ border-color:var(--paper-faint); }
.btn.text{ border:none; background:none; color:var(--paper-dim); font-size:13px; letter-spacing:.12em; padding:8px 10px; }
.btn.text:hover{ color:var(--paper); }
.btn.big{ padding:17px 52px; font-size:17px; }

/* ---------- 章节舞台与切换 ---------- */
#stage{ position:fixed; inset:0; }
.chapter{
  position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;
  padding:84px 5vw 90px; opacity:0; visibility:hidden; pointer-events:none;
  transform:translateY(26px); transition:opacity var(--t-chapter) var(--ease), transform var(--t-chapter) var(--ease), visibility 0s var(--t-chapter);
  overflow:hidden auto;
}
.chapter.active{ opacity:1; visibility:visible; pointer-events:auto; transform:none; transition-delay:0s; }
.chapter-head{ text-align:center; margin-bottom:34px; flex:none; }
.chapter-head h2{
  display:inline-flex; align-items:center; gap:13px;
  font-family:var(--serif); font-size:clamp(20px,2.6vw,30px); font-weight:600;
  letter-spacing:.3em; text-indent:.1em; color:#fff6ec;
  background:linear-gradient(135deg, #d24a35, var(--red) 45%, var(--red-deep));
  padding:12px 36px; border-radius:14px;
  border:1px solid rgba(244,236,223,.3);
  box-shadow:0 8px 30px rgba(156,43,31,.45), inset 0 1px 0 rgba(255,255,255,.18);
}
/* 银色圆形徽章（展板同款） */
.chapter-head h2::before{
  content:''; flex:none; width:30px; height:30px; border-radius:50%;
  border:1.5px solid rgba(236,240,238,.85);
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle cx='16' cy='16' r='15' fill='%23b03a28'/%3E%3Cpath d='M16 6 C21 11 22 18 16 26 C10 18 11 11 16 6 Z' fill='none' stroke='%23ecf0ee' stroke-width='1.6'/%3E%3Cpath d='M16 9 L16 24' stroke='%23ecf0ee' stroke-width='1'/%3E%3C/svg%3E") center/100% 100% no-repeat;
  box-shadow:0 0 10px rgba(220,174,82,.35);
}
.chapter-head p{ margin-top:12px; color:var(--paper-dim); font-size:14px; letter-spacing:.1em; }
.chapter-foot{ margin-top:26px; flex:none; }
.chapter-foot.center{ text-align:center; }
.hint{ color:var(--paper-faint); font-size:13px; letter-spacing:.06em; margin-top:14px; }

/* ============================================================
   01 羽 · 初见
   ============================================================ */
#ch-intro{ padding:0; }
.parallax-field{ position:absolute; inset:0; perspective:900px; overflow:hidden; }
.px-layer{ position:absolute; inset:-70px; will-change:transform; transition:transform .45s var(--ease); }
#introGlow{ background:radial-gradient(42% 38% at 50% 44%, rgba(196,69,45,.16), transparent 70%); }
#introVignette{ background:radial-gradient(78% 74% at 50% 50%, transparent 55%, rgba(0,0,0,.5)); }
#introPhoenix{ opacity:0; transition:opacity 1.2s var(--ease); }
#introPhoenix.show{ opacity:1; }
.intro-center{ position:relative; z-index:2; height:100%; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:8px; text-align:center; }
.blank-feather-wrap{ width:min(150px,26vw); animation:floatY 5.2s ease-in-out infinite; }
.blank-feather-wrap svg{ width:100%; height:auto; overflow:visible; }
@keyframes floatY{ 0%,100%{ transform:translateY(0) rotate(-1.6deg);} 50%{ transform:translateY(-16px) rotate(1.6deg);} }
.intro-lead{ font-family:var(--serif); font-size:clamp(15px,1.7vw,19px); color:var(--paper-dim); letter-spacing:.28em; line-height:2.3; margin:26px 0 8px; }
.intro-title h1{ font-family:var(--serif); font-size:clamp(34px,6vw,64px); font-weight:700; letter-spacing:.2em; }
.intro-title h1 span{ color:var(--red); margin:0 .18em; }
.intro-title p{ margin:14px 0 30px; color:var(--paper-dim); font-size:clamp(12px,1.4vw,15px); letter-spacing:.4em; text-indent:.4em; }
.intro-title .btn{ margin-top:6px; }
.intro-title .btn.text{ display:block; margin:14px auto 0; }
/* 触碰后羽片发光 */
.blank-feather-wrap.awakened{ animation:none; }
.blank-feather-wrap.awakened svg{ filter:drop-shadow(0 0 22px rgba(196,69,45,.65)); animation:pulseGlow 1.2s var(--ease) forwards; }
@keyframes pulseGlow{ 0%{ filter:drop-shadow(0 0 0 rgba(196,69,45,0)); } 45%{ filter:drop-shadow(0 0 34px rgba(196,69,45,.9)); } 100%{ filter:drop-shadow(0 0 14px rgba(196,69,45,.55)); } }

/* ============================================================
   02 序 · 识凤
   ============================================================ */
#ch-prologue{ justify-content:center; }
.prologue-stage{ position:relative; width:min(560px,72vw); height:min(300px,34vh); margin-bottom:6px; }
.pg-role{ position:absolute; bottom:0; width:96px; text-align:center; opacity:0; transform:translateY(18px); transition:all .7s var(--ease); }
.pg-role.show{ opacity:1; transform:none; }
.pg-role.left{ left:0; } .pg-role.right{ right:0; }
.pg-avatar{ width:76px; height:76px; margin:0 auto 8px; border-radius:50%; border:1px solid var(--line); overflow:hidden; background:var(--bg-2); }
.pg-avatar svg{ width:100%; height:100%; }
.pg-role .pg-name{ font-family:var(--serif); font-size:14px; letter-spacing:.3em; text-indent:.3em; }
.pg-role .pg-tag{ font-size:10px; color:var(--paper-faint); letter-spacing:.14em; margin-top:2px; }
.pg-phoenix{ position:absolute; left:50%; top:6%; transform:translateX(-50%); width:150px; opacity:.14; transition:opacity 1s var(--ease), filter 1s var(--ease); }
.pg-phoenix.lit{ opacity:.85; filter:drop-shadow(0 0 18px rgba(217,166,72,.45)); }
.prologue-text{ min-height:120px; width:min(640px,86vw); text-align:center; display:flex; flex-direction:column; align-items:center; justify-content:flex-start; gap:14px; }
.pg-line{ font-family:var(--serif); font-size:clamp(16px,2vw,21px); letter-spacing:.2em; line-height:2.1; color:var(--paper); opacity:0; transform:translateY(12px); transition:all .8s var(--ease); }
.pg-line.show{ opacity:1; transform:none; }
.pg-line.sys{ color:var(--gold); font-size:clamp(14px,1.7vw,17px); }
.prologue-ctrl{ margin-top:18px; opacity:0; transform:translateY(10px); transition:all .7s var(--ease); }
.prologue-ctrl.show{ opacity:1; transform:none; }

/* ============================================================
   03 溯 · 识源
   ============================================================ */
.source-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; width:min(1060px,92vw); }
.source-card{
  position:relative; border:1px solid rgba(201,57,43,.4); border-radius:14px; background:linear-gradient(160deg, rgba(201,57,43,.08), rgba(232,240,233,.02));
  padding:22px 16px 18px; text-align:center; transition:all var(--t-ui); overflow:hidden;
}
.source-card:hover{ border-color:rgba(220,174,82,.6); transform:translateY(-3px); box-shadow:0 10px 30px rgba(0,0,0,.35); }
.source-card .sc-fig{ height:110px; display:flex; align-items:center; justify-content:center; margin-bottom:12px; }
.source-card .sc-fig svg{ max-height:110px; width:auto; }
.source-card h3{ font-family:var(--serif); font-size:17px; letter-spacing:.22em; text-indent:.22em; font-weight:600; }
.source-card p{ font-size:12px; color:var(--paper-faint); margin-top:6px; letter-spacing:.05em; }
.source-card .sc-hot{ position:absolute; top:12px; right:12px; width:8px; height:8px; border-radius:50%; background:var(--red); box-shadow:0 0 0 0 rgba(196,69,45,.5); animation:hotPing 2.2s infinite; }
.source-card.viewed .sc-hot{ animation:none; background:var(--paper-faint); box-shadow:none; }
@keyframes hotPing{ 0%{ box-shadow:0 0 0 0 rgba(196,69,45,.5);} 70%{ box-shadow:0 0 0 9px rgba(196,69,45,0);} 100%{ box-shadow:0 0 0 0 rgba(196,69,45,0);} }

/* 抽屉 */
.drawer{
  position:fixed; top:0; right:0; bottom:0; width:min(480px,94vw); z-index:80;
  background:var(--bg-2); border-left:1px solid var(--line);
  transform:translateX(102%); transition:transform .55s var(--ease);
  padding:56px 34px 34px; overflow-y:auto;
}
.drawer.open{ transform:none; }
.drawer-close{ position:absolute; top:16px; right:18px; width:36px; height:36px; border-radius:50%; border:1px solid var(--line); color:var(--paper-dim); font-size:14px; transition:all var(--t-ui); }
.drawer-close:hover{ color:var(--paper); }
.drawer-body h3{ font-family:var(--serif); font-size:22px; letter-spacing:.2em; margin-bottom:4px; }
.drawer-body .dw-sub{ color:var(--paper-faint); font-size:12px; letter-spacing:.16em; margin-bottom:18px; }
.dw-fig{ border:1px solid var(--line-soft); border-radius:10px; background:rgba(0,0,0,.18); padding:16px; display:flex; justify-content:center; margin-bottom:18px; }
.dw-fig svg{ max-height:170px; width:auto; }
.dw-level{ display:flex; gap:12px; padding:13px 0; border-top:1px solid var(--line-soft); }
.dw-level b{ flex:none; width:44px; font-family:var(--serif); font-weight:600; color:var(--red); font-size:14px; letter-spacing:.1em; }
.dw-level span{ font-size:13px; color:var(--paper-dim); line-height:1.9; }
.dw-source{ margin-top:16px; padding:12px 14px; border-left:2px solid var(--gold); background:rgba(217,166,72,.06); font-size:12px; color:var(--paper-dim); line-height:1.9; }
.dw-source em{ font-style:normal; color:var(--gold); display:block; margin-bottom:2px; letter-spacing:.14em; }

/* ============================================================
   04 衣 · 塑形
   ============================================================ */
.form-layout{ display:grid; grid-template-columns:1.15fr .95fr; gap:clamp(20px,4vw,64px); align-items:center; width:min(1080px,94vw); }
.translate-stage{ position:relative; height:300px; border:1px solid var(--line-soft); border-radius:14px; background:linear-gradient(170deg, rgba(244,236,223,.035), transparent); overflow:hidden; }
.ts-svg{ position:absolute; inset:0; }
.ts-svg .ts-g{ opacity:0; transition:opacity .8s var(--ease); }
.ts-svg .ts-g.on{ opacity:1; }
.ts-label{ position:absolute; top:14px; left:16px; font-family:var(--serif); font-size:13px; letter-spacing:.3em; color:var(--paper-dim); }
.ts-label b{ color:var(--red); font-weight:600; }
.ts-meter{ position:absolute; left:16px; right:16px; bottom:14px; height:2px; background:var(--line-soft); border-radius:2px; }
.ts-meter i{ display:block; height:100%; width:0%; background:linear-gradient(90deg, var(--gold), var(--red)); border-radius:2px; transition:width .2s linear; }
input[type=range]{ width:100%; margin-top:20px; -webkit-appearance:none; appearance:none; height:30px; background:transparent; }
input[type=range]::-webkit-slider-runnable-track{ height:3px; background:linear-gradient(90deg, var(--gold), var(--red)); border-radius:3px; }
input[type=range]::-webkit-slider-thumb{ -webkit-appearance:none; width:24px; height:24px; margin-top:-10.5px; border-radius:50%; background:var(--paper); border:5px solid var(--bg); box-shadow:0 0 0 1px var(--paper-faint); cursor:grab; }
input[type=range]::-moz-range-track{ height:3px; background:linear-gradient(90deg, var(--gold), var(--red)); border-radius:3px; }
input[type=range]::-moz-range-thumb{ width:14px; height:14px; border-radius:50%; background:var(--paper); border:none; cursor:grab; }
.feather-side{ text-align:center; }
.feather-holder{ display:flex; justify-content:center; }
.feather-holder svg{ width:min(190px,30vw); height:auto; overflow:visible; }
.feather-holder.small svg{ width:130px; }
.feather-holder.big svg{ width:230px; }
.feather-holder.huge svg{ width:min(300px,42vh); }
.shape-picker{ display:flex; gap:12px; justify-content:center; margin-top:18px; }
.shape-opt{ width:86px; padding:12px 6px 10px; border:1px solid var(--line); border-radius:12px; background:rgba(244,236,223,.03); transition:all var(--t-ui); }
.shape-opt:hover{ border-color:var(--paper-faint); }
.shape-opt.sel{ border-color:var(--red); background:rgba(196,69,45,.1); }
.shape-opt svg{ width:44px; height:66px; display:block; margin:0 auto 6px; }
.shape-opt span{ font-size:12px; letter-spacing:.14em; color:var(--paper-dim); }
.shape-opt.sel span{ color:var(--paper); }
.shape-opt.flow-line{ animation:flowIn .9s var(--ease); }
@keyframes flowIn{ from{ stroke-dashoffset:240; } to{ stroke-dashoffset:0; } }

/* ============================================================
   05 饰 · 银光循迹
   ============================================================ */
.silver-layout{ display:grid; grid-template-columns:1.25fr .8fr; gap:clamp(20px,4vw,56px); align-items:center; width:min(1080px,94vw); }
.silver-stage{ position:relative; height:320px; border:1px solid var(--line-soft); border-radius:14px; background:radial-gradient(70% 90% at 50% 50%, rgba(201,205,212,.05), transparent); touch-action:none; }
.silver-stage svg{ position:absolute; inset:0; width:100%; height:100%; }
.sv-trace{ stroke:var(--silver); stroke-width:2.4; fill:none; stroke-linecap:round; opacity:.92; }
.sv-base{ stroke:rgba(201,205,212,.16); stroke-width:2.4; fill:none; stroke-linecap:round; }
.sv-node{ fill:var(--bg-2); stroke:var(--silver-dim); stroke-width:1.6; r:9; cursor:pointer; transition:all .3s; }
.sv-node.lit{ fill:var(--silver); stroke:var(--silver); filter:drop-shadow(0 0 8px rgba(201,205,212,.8)); }
.node-cards{ display:flex; flex-direction:column; gap:10px; min-height:30px; }
.node-card{ border:1px solid var(--line-soft); border-left:2px solid var(--silver); border-radius:8px; padding:10px 14px; background:rgba(201,205,212,.05); opacity:0; transform:translateX(16px); transition:all .5s var(--ease); }
.node-card.show{ opacity:1; transform:none; }
.node-card b{ font-size:13px; letter-spacing:.1em; color:var(--silver); display:block; }
.node-card span{ font-size:12px; color:var(--paper-faint); }

/* ============================================================
   06 纹 · 织羽
   ============================================================ */
.pattern-layout{ display:grid; grid-template-columns:.85fr 1.1fr .9fr; gap:clamp(16px,3vw,44px); align-items:center; width:min(1180px,94vw); }
.pattern-lib{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.pat-card{ border:1px solid var(--line); border-radius:12px; padding:12px 8px 10px; text-align:center; background:rgba(244,236,223,.03); transition:all var(--t-ui); }
.pat-card:hover{ border-color:var(--paper-faint); transform:translateY(-2px); }
.pat-card.sel{ border-color:var(--red); background:rgba(196,69,45,.09); }
.pat-card svg{ width:64px; height:64px; border-radius:8px; border:1px solid var(--line-soft); background:rgba(0,0,0,.2); margin-bottom:8px; }
.pat-card .pat-name{ font-family:var(--serif); font-size:14px; letter-spacing:.18em; }
.pat-card .pat-note{ font-size:10.5px; color:var(--paper-faint); margin-top:3px; letter-spacing:.03em; }
.pattern-ctrl{ display:flex; flex-direction:column; gap:18px; }
.ctrl-group{ display:flex; gap:8px; flex-wrap:wrap; }
.ctrl-chip{ padding:9px 18px; border-radius:999px; border:1px solid var(--line); font-size:13px; letter-spacing:.14em; color:var(--paper-dim); transition:all var(--t-ui); }
.ctrl-chip:hover{ border-color:var(--paper-faint); color:var(--paper); }
.ctrl-chip.sel{ border-color:var(--red); color:var(--paper); background:rgba(196,69,45,.12); }
.pattern-main .feather-holder{ position:relative; }
.weave-in{ animation:weaveFade 1s var(--ease); }
@keyframes weaveFade{ from{ opacity:0; transform:scale(1.04); } to{ opacity:1; transform:none; } }

/* ============================================================
   07 色 · 染羽
   ============================================================ */
.color-layout{ display:grid; grid-template-columns:1fr .9fr; gap:clamp(24px,5vw,72px); align-items:center; width:min(980px,92vw); }
.color-ctrl{ display:flex; flex-direction:column; gap:8px; }
.ctrl-title{ font-family:var(--serif); font-size:14px; letter-spacing:.3em; color:var(--paper-dim); margin:8px 0 2px; }
.swatch-row{ display:flex; gap:12px; }
.swatch{ flex:1; border:1px solid var(--line); border-radius:12px; padding:12px 10px 10px; text-align:center; transition:all var(--t-ui); }
.swatch:hover{ transform:translateY(-2px); border-color:var(--paper-faint); }
.swatch.sel{ border-color:var(--red); background:rgba(196,69,45,.08); }
.swatch .sw-colors{ display:flex; height:34px; border-radius:7px; overflow:hidden; margin-bottom:8px; }
.swatch .sw-colors i{ flex:1; }
.swatch span{ font-size:12.5px; letter-spacing:.12em; color:var(--paper-dim); }
.swatch.sel span{ color:var(--paper); }
.dye-anim{ animation:dyeSpread 1.3s var(--ease); }
@keyframes dyeSpread{ from{ filter:brightness(2.2) saturate(.2); } to{ filter:none; } }

/* ============================================================
   08 羽 · 我的文化羽
   ============================================================ */
.result-layout{ display:grid; grid-template-columns:auto 1fr; gap:clamp(28px,6vw,90px); align-items:center; width:min(1040px,94vw); }
.result-info .result-kicker{ font-family:var(--serif); color:var(--gold); letter-spacing:.5em; font-size:13px; margin-bottom:8px; }
.result-info h2{ font-family:var(--serif); font-size:clamp(21px,2.6vw,30px); font-weight:600; letter-spacing:.16em; line-height:1.8; }
.feather-id{ display:inline-block; margin:18px 0 6px; padding:8px 20px; border:1px dashed var(--paper-faint); border-radius:8px; font-family:var(--serif); font-size:18px; letter-spacing:.3em; color:var(--paper); }
.result-summary{ display:flex; flex-wrap:wrap; gap:8px; margin:12px 0 4px; }
.rs-chip{ font-size:12px; padding:6px 14px; border-radius:999px; border:1px solid var(--line); color:var(--paper-dim); letter-spacing:.08em; }
.rs-chip b{ color:var(--paper); font-weight:500; }
.result-actions{ display:flex; gap:14px; margin-top:22px; flex-wrap:wrap; }
.locked-tip{ margin-top:16px; font-size:12.5px; color:var(--gold); letter-spacing:.06em; }
.feather-holder.huge svg{ animation:breath 4.6s ease-in-out infinite; }
@keyframes breath{ 0%,100%{ transform:translateY(0) rotate(-.6deg);} 50%{ transform:translateY(-10px) rotate(.6deg);} }

/* ============================================================
   09 凤 · 同心（终章）
   ============================================================ */
#ch-phoenix{ padding:0; }
#finaleContour{ background:radial-gradient(40% 42% at 50% 46%, rgba(217,166,72,.07), transparent 72%); }
#finaleMist{ background:
  radial-gradient(28% 20% at 22% 70%, rgba(196,69,45,.07), transparent 70%),
  radial-gradient(24% 18% at 78% 30%, rgba(51,96,106,.09), transparent 70%); }
#finaleVignette{ background:radial-gradient(80% 76% at 50% 50%, transparent 52%, rgba(0,0,0,.62)); }
.finale-pre{ position:relative; z-index:3; height:100%; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:14px; text-align:center; }
.finale-line{ font-family:var(--serif); font-size:clamp(19px,2.6vw,28px); letter-spacing:.44em; text-indent:.44em; color:var(--paper); opacity:0; transform:translateY(14px); transition:all .9s var(--ease); }
.finale-line.show{ opacity:1; transform:none; }
.finale-pre .btn{ margin-top:26px; }
.finale-stage{ position:absolute; inset:0; z-index:2; display:flex; align-items:center; justify-content:center; }
.finale-stage svg{ width:min(1150px,96vw); height:auto; max-height:88vh; overflow:visible; }
.f-ph{ position:absolute; opacity:0; will-change:transform; transition:transform 1.05s var(--ease), opacity .7s var(--ease); }
.f-ph svg{ width:100%; height:auto; display:block; overflow:visible; }
.f-ph.fly{ opacity:1; }
.f-ph.user-feather{ z-index:5; }
.f-outline{ opacity:0; transition:opacity 1.4s var(--ease); }
.f-outline.show{ opacity:1; }
.wing-l,.wing-r{ transform-box:fill-box; }
.flap .wing-l{ animation:flapL .85s var(--ease); transform-origin:92% 88%; }
.flap .wing-r{ animation:flapR .85s var(--ease); transform-origin:8% 88%; }
@keyframes flapL{ 0%,100%{ transform:rotate(0);} 30%{ transform:rotate(-9deg);} 65%{ transform:rotate(4deg);} }
@keyframes flapR{ 0%,100%{ transform:rotate(0);} 30%{ transform:rotate(9deg);} 65%{ transform:rotate(-4deg);} }
.finale-title{ position:absolute; left:0; right:0; bottom:11%; z-index:6; text-align:center; opacity:0; transform:translateY(18px); transition:all 1.1s var(--ease); }
.finale-title.show{ opacity:1; transform:none; }
.finale-title h1{ font-family:var(--serif); font-size:clamp(26px,4.6vw,46px); font-weight:700; letter-spacing:.3em; text-indent:.3em; text-shadow:0 2px 30px rgba(0,0,0,.6); }
.finale-title h1 span{ color:var(--red); margin:0 .16em; }
.finale-title p{ color:var(--paper-dim); letter-spacing:.34em; text-indent:.34em; font-size:14px; margin:10px 0 20px; }
.finale-actions{ display:flex; gap:14px; justify-content:center; }

/* ============================================================
   10 留 · 文化卡
   ============================================================ */
.card-layout{ display:grid; grid-template-columns:auto 1fr; gap:clamp(26px,5vw,70px); align-items:center; width:min(940px,92vw); }
.card-preview{ border-radius:16px; overflow:hidden; border:1px solid var(--line); box-shadow:0 24px 70px rgba(0,0,0,.5); animation:cardIn .7s var(--ease); }
@keyframes cardIn{ from{ opacity:0; transform:scale(.94) translateY(14px);} to{ opacity:1; transform:none;} }
.card-preview canvas{ display:block; width:min(320px,60vw); height:auto; }
.card-ctrl{ display:flex; flex-direction:column; gap:14px; align-items:flex-start; }

/* ============================================================
   11 展 · 延展
   ============================================================ */
.ext-scroll{ width:min(1020px,92vw); display:flex; flex-direction:column; gap:22px; overflow-y:auto; padding:4px; }
.ext-block{ display:grid; grid-template-columns:220px 1fr; gap:24px; border:1px solid rgba(201,57,43,.38); border-radius:16px; padding:24px; background:linear-gradient(160deg, rgba(201,57,43,.07), rgba(232,240,233,.02)); }
.ext-fig{ display:flex; align-items:center; justify-content:center; min-height:150px; }
.ext-fig svg{ max-width:200px; max-height:150px; }
.ext-body h3{ font-family:var(--serif); font-size:19px; letter-spacing:.2em; margin-bottom:8px; }
.ext-body h3 em{ font-style:normal; font-size:11px; color:var(--gold); border:1px solid rgba(217,166,72,.4); border-radius:999px; padding:2px 10px; margin-left:10px; letter-spacing:.14em; vertical-align:2px; }
.ext-body p{ font-size:13.5px; color:var(--paper-dim); line-height:2; max-width:640px; }
.ext-tags{ display:flex; gap:8px; flex-wrap:wrap; margin-top:12px; }

/* ---------- 浮层 ---------- */
.overlay{ position:fixed; inset:0; z-index:90; background:rgba(10,7,5,.78); backdrop-filter:blur(6px); display:flex; align-items:center; justify-content:center; opacity:0; visibility:hidden; transition:all .4s var(--ease); }
.overlay.open{ opacity:1; visibility:visible; }
.overlay-panel{ width:min(760px,92vw); max-height:82vh; overflow-y:auto; background:var(--bg-2); border:1px solid var(--line); border-radius:18px; padding:38px 40px; }
.overlay-panel h3{ font-family:var(--serif); letter-spacing:.24em; font-size:20px; margin-bottom:20px; text-align:center; }
.overlay-close{ position:fixed; top:22px; right:26px; width:40px; height:40px; border-radius:50%; border:1px solid var(--line); color:var(--paper-dim); font-size:15px; }
.replay-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.replay-item{ text-align:center; }
.replay-item .rp-thumb{ border:1px solid var(--line-soft); border-radius:12px; padding:14px 8px; background:rgba(0,0,0,.16); margin-bottom:8px; }
.replay-item .rp-thumb svg{ width:52px; height:78px; }
.replay-item b{ display:block; font-family:var(--serif); font-size:13px; letter-spacing:.2em; color:var(--paper); margin-bottom:3px; font-weight:600; }
.replay-item span{ font-size:11.5px; color:var(--paper-faint); }

/* ---------- Toast ---------- */
.toast{
  position:fixed; left:50%; bottom:96px; transform:translate(-50%,18px); z-index:120;
  background:var(--bg-3); border:1px solid var(--line); color:var(--paper);
  padding:11px 26px; border-radius:999px; font-size:13.5px; letter-spacing:.1em;
  opacity:0; pointer-events:none; transition:all .4s var(--ease); box-shadow:0 10px 34px rgba(0,0,0,.4);
}
.toast.show{ opacity:1; transform:translate(-50%,0); }
.toast .t-actions{ display:flex; gap:10px; margin-top:10px; justify-content:center; }
.toast .t-actions .btn{ padding:8px 22px; font-size:13px; }

/* ============================================================
   响应式（移动端 · 纵向优先）
   ============================================================ */
@media (max-width: 900px){
  .chrome.top{ padding:0 16px; height:56px; }
  .chrome.bottom{ padding:0 14px var(--safe-b); height:54px; }
  .logo-text em{ display:none; }
  .stages .stage span.slabel{ display:none; }
  .stage i{ width:18px; height:18px; font-size:10px; }
  .chapter{ padding:70px 5.5vw 84px; }
  .chapter-head{ margin-bottom:22px; }
  .chapter-head h2{ letter-spacing:.2em; }

  /* 初见 */
  .intro-lead{ letter-spacing:.14em; }

  /* 识源 → 2列 */
  .source-grid{ grid-template-columns:1fr 1fr; gap:12px; width:92vw; }
  .source-card .sc-fig{ height:78px; }
  .source-card .sc-fig svg{ max-height:78px; }
  .drawer{ width:100vw; padding:52px 22px 30px; }

  /* 塑形 → 纵排 */
  .form-layout{ grid-template-columns:1fr; gap:18px; }
  .translate-stage{ height:220px; }
  .feather-holder svg{ width:150px; }
  .shape-picker{ flex-wrap:wrap; }

  /* 循迹 → 纵排 */
  .silver-layout{ grid-template-columns:1fr; gap:16px; }
  .silver-stage{ height:250px; }

  /* 织羽 → 纵排 */
  .pattern-layout{ grid-template-columns:1fr; gap:16px; }
  .pattern-lib{ grid-template-columns:repeat(4,1fr); gap:8px; }
  .pat-card svg{ width:46px; height:46px; }
  .pat-card .pat-note{ display:none; }
  .feather-holder.big svg{ width:180px; }
  .pattern-ctrl{ flex-direction:row; flex-wrap:wrap; gap:10px; }
  .pattern-ctrl .chapter-foot{ width:100%; }

  /* 染羽 */
  .color-layout{ grid-template-columns:1fr; gap:20px; }
  .swatch-row{ flex-wrap:wrap; }
  .swatch{ min-width:31%; }

  /* 结果 */
  .result-layout{ grid-template-columns:1fr; text-align:center; gap:14px; }
  .result-actions{ justify-content:center; }
  .result-summary{ justify-content:center; }

  /* 文化卡 */
  .card-layout{ grid-template-columns:1fr; text-align:center; }
  .card-ctrl{ align-items:center; }
  .card-preview canvas{ width:min(260px,74vw); }

  /* 延展 */
  .ext-block{ grid-template-columns:1fr; gap:14px; padding:18px; }
  .ext-fig{ min-height:110px; }
  .overlay-panel{ padding:26px 18px; }
  .replay-grid{ grid-template-columns:repeat(2,1fr); }

  .finale-title h1{ letter-spacing:.18em; }
  .finale-actions{ flex-direction:column; align-items:center; gap:10px; }
}

@media (max-width: 420px){
  .chapter-name{ display:none; }
  .source-grid{ gap:8px; }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{ animation-duration:.01ms !important; transition-duration:.01ms !important; }
}