/* ============================================================
   零基础动画发音密码 · 字母小镇  —  吉卜力水彩绘本风
   ============================================================ */

:root{
  /* 取色自水彩素材 */
  --paper:#f6edda;
  --paper-2:#fcf7ec;
  --paper-tint:#efe1c7;
  --ink:#473527;
  --ink-soft:#7a6450;
  --ink-faint:#9c876f;
  --terra:#c8794f;
  --terra-2:#e08a5b;
  --terra-deep:#a85d39;
  --sky:#8fbfd9;
  --sky-deep:#5f97b8;
  --gold:#e8b65a;
  --gold-deep:#d49333;
  --green:#7a9b6e;
  --green-deep:#5c7c50;
  --rose:#d98a8a;

  --line:rgba(71,53,39,.16);
  --line-2:rgba(71,53,39,.10);

  --shadow-sm:0 4px 14px rgba(71,53,39,.10);
  --shadow-md:0 14px 34px rgba(71,53,39,.14);
  --shadow-lg:0 28px 64px rgba(71,53,39,.20);

  --r:16px; --r-lg:26px; --r-xl:38px;

  --f-display:"ZCOOL XiaoWei","Songti SC",serif;
  --f-brush:"Ma Shan Zheng","ZCOOL XiaoWei",cursive;
  --f-latin:"Fredoka",ui-rounded,system-ui,sans-serif;
  --f-body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;

  --maxw:1180px;
  --nav-h:72px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px);-webkit-text-size-adjust:100%}
body{
  font-family:var(--f-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.75;
  font-size:16.5px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
b,strong{font-weight:700}

/* 纸纹颗粒 */
.grain{
  position:fixed;inset:0;z-index:60;pointer-events:none;opacity:.05;
  mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* IPA 音标小标签 */
.ipa{
  font-family:var(--f-latin);font-weight:600;
  color:var(--terra-deep);
  background:linear-gradient(180deg,rgba(232,182,90,.28),rgba(232,182,90,.18));
  padding:.02em .34em;border-radius:7px;letter-spacing:.01em;white-space:nowrap;
}

/* ============ 通用区块 ============ */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,40px)}
.section{padding:clamp(64px,9vw,120px) 0;position:relative}
.section--tinted{background:var(--paper-tint)}
.eyebrow{
  font-family:var(--f-brush);font-size:clamp(1.05rem,2.4vw,1.5rem);
  color:var(--terra);letter-spacing:.06em;margin-bottom:.5rem;
}
.h2{
  font-family:var(--f-display);font-weight:400;
  font-size:clamp(1.9rem,5vw,3.2rem);line-height:1.18;
  color:var(--ink);letter-spacing:.01em;margin-bottom:1rem;
}
.lead{
  font-size:clamp(1rem,2.2vw,1.18rem);color:var(--ink-soft);
  max-width:62ch;margin-bottom:clamp(2rem,4vw,3.2rem);
}

/* ============ 导航 ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(16px,4vw,34px);
  background:rgba(246,237,218,.62);
  backdrop-filter:blur(10px) saturate(1.2);
  -webkit-backdrop-filter:blur(10px) saturate(1.2);
  border-bottom:1px solid transparent;
  transition:background .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.nav.is-scrolled{background:rgba(246,237,218,.92);border-bottom-color:var(--line-2);box-shadow:0 6px 20px rgba(71,53,39,.07)}
.nav__brand{display:flex;align-items:center;gap:11px}
.nav__mark{
  width:46px;height:46px;border-radius:50%;flex:none;object-fit:contain;padding:3px;
  background:radial-gradient(circle at 50% 36%,#ffffff,#fbf2e3);
  box-shadow:var(--shadow-sm),inset 0 0 0 1px rgba(200,121,79,.14);
}
.nav__brandtext{display:flex;flex-direction:column;line-height:1.05}
.nav__pub{font-size:.7rem;color:var(--ink-soft);letter-spacing:.18em}
.nav__title{font-family:var(--f-display);font-size:1.12rem;color:var(--ink)}
.nav__links{display:flex;gap:clamp(14px,2vw,28px)}
.nav__links a{position:relative;font-size:.98rem;color:var(--ink-soft);padding:6px 2px;transition:color .25s}
.nav__links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;background:var(--terra);transition:right .28s ease}
.nav__links a:hover{color:var(--terra-deep)}
.nav__links a:hover::after{right:0}
.nav__menu{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__menu span{width:24px;height:2.4px;border-radius:2px;background:var(--ink);transition:.3s}
.nav__menu[aria-expanded="true"] span:nth-child(1){transform:translateY(7.4px) rotate(45deg)}
.nav__menu[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__menu[aria-expanded="true"] span:nth-child(3){transform:translateY(-7.4px) rotate(-45deg)}

/* ============ HERO ============ */
.hero{position:relative;min-height:100svh;min-height:640px;display:flex;align-items:center;justify-content:center;overflow:hidden;text-align:center;padding:calc(var(--nav-h) + 24px) 20px 90px}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__img{width:100%;height:100%;object-fit:cover;transform:scale(1.08);will-change:transform}
.hero__sky{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 80% at 50% 8%,rgba(255,251,240,.30),transparent 46%),
    linear-gradient(180deg,rgba(246,237,218,.34) 0%,transparent 15%,transparent 40%,rgba(246,237,218,.52) 66%,rgba(246,237,218,.96) 100%);
}
.clouds{position:absolute;inset:0;z-index:1;pointer-events:none}
.cloud{position:absolute;color:rgba(255,255,255,.92);filter:drop-shadow(0 10px 16px rgba(120,150,170,.18))}
.cloud--1{width:200px;top:16%;left:-220px;animation:drift 64s linear infinite}
.cloud--2{width:130px;top:30%;left:-160px;opacity:.8;animation:drift 92s linear infinite 8s}
.cloud--3{width:260px;top:9%;left:-300px;opacity:.7;animation:drift 120s linear infinite 20s}
@keyframes drift{to{transform:translateX(calc(100vw + 320px))}}

.hero__content{position:relative;z-index:2;max-width:760px}
.hero__eyebrow{font-family:var(--f-brush);font-size:clamp(1rem,3vw,1.4rem);color:var(--terra-deep);letter-spacing:.16em;margin-bottom:1.1rem;text-shadow:0 1px 8px rgba(255,255,255,.7)}
.hero__sign{
  position:relative;display:inline-block;
  padding:clamp(18px,3.4vw,30px) clamp(28px,6vw,64px);
  background:linear-gradient(180deg,rgba(252,247,236,.9),rgba(246,237,218,.84));
  border:2px solid rgba(168,93,57,.4);
  border-radius:var(--r-xl);
  box-shadow:var(--shadow-lg),inset 0 0 0 6px rgba(255,255,255,.4);
  backdrop-filter:blur(3px);
}
.hero__rope{position:absolute;top:-46px;width:2.4px;height:46px;background:linear-gradient(var(--terra-deep),rgba(168,93,57,.2));border-radius:2px}
.hero__rope--l{left:28%;transform:rotate(11deg);transform-origin:bottom}
.hero__rope--r{right:28%;transform:rotate(-11deg);transform-origin:bottom}
.hero__title{
  font-family:var(--f-display);font-weight:400;
  font-size:clamp(2.6rem,9vw,5.4rem);line-height:1.06;letter-spacing:.03em;
  color:var(--ink);
}
.hero__title{
  background:linear-gradient(176deg,var(--terra-deep) 8%,var(--terra) 48%,var(--gold-deep) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 2px 0 rgba(255,255,255,.25);
}
.hero__sub{margin:1.6rem auto 0;max-width:36ch;font-size:clamp(1rem,2.5vw,1.2rem);color:var(--ink);text-shadow:0 1px 2px rgba(255,255,255,.95),0 2px 16px rgba(255,255,255,.75)}
.hero__chips{list-style:none;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:1.7rem 0 2rem}
.hero__chips li{
  font-size:.92rem;color:var(--ink);background:rgba(252,247,236,.86);
  border:1px solid var(--line);border-radius:999px;padding:8px 16px;box-shadow:var(--shadow-sm)
}
.hero__chips strong{color:var(--terra-deep)}
.hero__cta{
  display:inline-flex;align-items:center;gap:10px;
  font-size:1.05rem;font-weight:500;color:#fff;
  background:linear-gradient(180deg,var(--terra-2),var(--terra));
  padding:14px 30px;border-radius:999px;
  box-shadow:var(--shadow-md),inset 0 -3px 6px rgba(0,0,0,.14);
  transition:transform .25s ease,box-shadow .25s ease;
}
.hero__cta svg{animation:bob 1.8s ease-in-out infinite}
.hero__cta:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(5px)}}

/* ============ 分隔 ============ */
.divider{position:relative;line-height:0;z-index:3}
.divider svg{width:100%;height:100%}
.divider--hills{height:118px;margin-top:-117px;color:var(--paper)}
.divider--hills.divider--flip{margin-top:0;height:120px;color:var(--paper);background:var(--paper-tint)}
.divider--hills.divider--flip svg{transform:scaleX(-1)}
.divider--cloud{height:96px;color:var(--paper);background:var(--paper-tint)}

/* ============ 世界观 ============ */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:clamp(16px,2.4vw,26px)}
.feature{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(22px,3vw,32px);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease;
}
.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.feature__icon{
  width:62px;height:62px;border-radius:20px;margin-bottom:16px;display:grid;place-items:center;
  background:radial-gradient(circle at 34% 28%,#ffe6b0,var(--gold) 75%);
  box-shadow:inset 0 -3px 6px rgba(0,0,0,.10),var(--shadow-sm);
  font-size:1.9rem;
}
.feature__icon[data-i="story"]::before{content:"📖"}
.feature__icon[data-i="phonics"]::before{content:"🔤"}
.feature__icon[data-i="anim"]::before{content:"🎬"}
.feature__icon[data-i="zero"]::before{content:"🌱"}
.feature h3{font-family:var(--f-display);font-weight:400;font-size:1.35rem;margin-bottom:.4rem;color:var(--ink)}
.feature p{font-size:.98rem;color:var(--ink-soft)}

/* ============ 角色图鉴 ============ */
.cast{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2.4vw,26px)}
.cast__card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease;
}
.cast__card:hover{transform:translateY(-7px);box-shadow:var(--shadow-lg)}
.cast__art{
  position:relative;height:240px;display:grid;place-items:center;padding:18px 18px 0;overflow:hidden;
}
.cast__art::after{content:"";position:absolute;left:50%;bottom:14px;transform:translateX(-50%);width:62%;height:18px;border-radius:50%;background:rgba(71,53,39,.18);filter:blur(7px)}
.cast__art img{height:100%;width:auto;object-fit:contain;position:relative;z-index:1;filter:drop-shadow(0 12px 16px rgba(71,53,39,.22));transition:transform .35s ease}
.cast__card:hover .cast__art img{transform:translateY(-6px) scale(1.04)}
.cast__card:nth-child(1) .cast__art{background:radial-gradient(120% 100% at 50% 0,#cfe6f2,#a9d0e3)}
.cast__card:nth-child(2) .cast__art{background:radial-gradient(120% 100% at 50% 0,#ffe7b8,#f3cf86)}
.cast__card:nth-child(3) .cast__art{background:radial-gradient(120% 100% at 50% 0,#f3d2cf,#e7b2ac)}
.cast__body{padding:clamp(18px,2.5vw,24px)}
.cast__tag{display:inline-block;font-size:.78rem;letter-spacing:.04em;color:var(--terra-deep);background:rgba(200,121,79,.12);border:1px solid rgba(200,121,79,.25);padding:3px 11px;border-radius:999px;margin-bottom:.55rem}
.cast__body h3{font-family:var(--f-display);font-weight:400;font-size:1.6rem;margin-bottom:.45rem;color:var(--ink)}
.cast__body p{font-size:.96rem;color:var(--ink-soft)}

/* 全员跑马灯 */
.parade{margin-top:clamp(36px,6vw,64px);overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.parade__track{display:flex;gap:clamp(14px,2vw,30px);width:max-content;animation:marquee 70s linear infinite}
.parade:hover .parade__track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(-50%)}}
.parade__item{flex:none;width:104px;display:flex;flex-direction:column;align-items:center;gap:6px;cursor:default}
.parade__item img{height:108px;width:auto;object-fit:contain;filter:drop-shadow(0 8px 10px rgba(71,53,39,.20));transition:transform .3s ease}
.parade__item i{font-family:var(--f-latin);font-weight:600;font-style:normal;font-size:1.1rem;color:var(--ink-soft);transition:color .3s}
.parade__item:hover img{transform:translateY(-8px) scale(1.1)}
.parade__item:hover i{color:var(--terra-deep)}

/* ============ 高光切片 ============ */
.reel{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,1.8vw,22px)}
.clip{
  position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/9;
  background:#cdbfa8;box-shadow:var(--shadow-md);border:0;cursor:default;
}
.clip video,.clip>img{width:100%;height:100%;object-fit:cover}
.clip::after{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18),inset 0 -60px 50px -30px rgba(71,53,39,.55);pointer-events:none}
.clip figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:30px 18px 14px;color:#fff;font-size:1rem;font-weight:500;
  text-shadow:0 1px 10px rgba(0,0,0,.5);display:flex;flex-direction:column;gap:3px;align-items:flex-start;
}
.clip figcaption .ipa{color:#fff;background:rgba(255,255,255,.22)}
.clip__kicker{font-family:var(--f-latin);font-size:.72rem;letter-spacing:.12em;color:#ffe4b8;text-transform:uppercase;opacity:.95}
.clip--wide{grid-column:span 2}
.reel>:nth-child(6){grid-column:span 2}

/* 正片入口卡 */
.clip--feature{cursor:pointer;display:block}
.clip--feature img{filter:saturate(1.05) brightness(.82)}
.clip--feature::after{box-shadow:inset 0 0 0 1px rgba(255,255,255,.2),inset 0 0 90px rgba(71,53,39,.5)}
.clip__play{
  position:absolute;top:42%;left:50%;transform:translate(-50%,-50%);z-index:3;
  width:74px;height:74px;border-radius:50%;display:grid;place-items:center;color:var(--ink);
  background:radial-gradient(circle at 34% 28%,#ffe09a,var(--gold) 78%);
  box-shadow:0 10px 24px rgba(0,0,0,.3),inset 0 -3px 6px rgba(0,0,0,.14);
  transition:transform .3s ease;
}
.clip__play::before{content:"";position:absolute;inset:-8px;border-radius:50%;border:2px solid rgba(255,255,255,.6);animation:pulse 2.2s ease-out infinite}
@keyframes pulse{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.5);opacity:0}}
.clip--feature:hover .clip__play{transform:translate(-50%,-50%) scale(1.1)}
.clip__featurelabel{position:absolute;left:0;right:0;bottom:0;z-index:3;padding:26px 18px 16px;color:#fff;text-align:center;display:flex;flex-direction:column;gap:2px;text-shadow:0 1px 10px rgba(0,0,0,.55)}
.clip__featurelabel b{font-family:var(--f-display);font-weight:400;font-size:1.3rem;letter-spacing:.02em}
.clip__featurelabel{font-size:.86rem}

/* ============ 看一节课 ============ */
.beats{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(14px,1.8vw,20px);margin-bottom:clamp(34px,5vw,56px)}
.beat{
  position:relative;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(20px,2.4vw,26px);box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .3s ease,box-shadow .3s ease;
}
.beat::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,var(--terra-2),var(--gold))}
.beat:nth-child(2)::before{background:linear-gradient(90deg,var(--sky-deep),var(--sky))}
.beat:nth-child(3)::before{background:linear-gradient(90deg,var(--terra-deep),var(--rose))}
.beat:nth-child(4)::before{background:linear-gradient(90deg,var(--green-deep),var(--green))}
.beat:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.beat__no{font-family:var(--f-latin);font-weight:700;font-size:2.2rem;color:rgba(200,121,79,.28);line-height:1;display:block;margin-bottom:.3rem}
.beat h3{font-family:var(--f-display);font-weight:400;font-size:1.3rem;margin-bottom:.4rem;color:var(--ink)}
.beat p{font-size:.93rem;color:var(--ink-soft)}

.knowledge{display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,2.6vw,30px)}
.knowledge__rule,.knowledge__steps{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(22px,3vw,34px);box-shadow:var(--shadow-sm)}
.knowledge__h{font-family:var(--f-display);font-weight:400;font-size:1.4rem;margin-bottom:1.2rem;color:var(--ink)}
.sounds{display:flex;align-items:stretch;gap:14px}
.sound{flex:1;text-align:center;border-radius:var(--r);padding:18px 12px;border:1px solid var(--line)}
.sound--long{background:linear-gradient(180deg,#dceaf2,#c4ddea)}
.sound--short{background:linear-gradient(180deg,#fbe0cf,#f4c6a6)}
.sound__face{font-size:2rem;display:block;line-height:1}
.sound .ipa{font-size:1.7rem;display:inline-block;margin:.4rem 0 .2rem;background:rgba(255,255,255,.5)}
.sound__label{display:block;font-weight:600;color:var(--ink);font-size:.95rem}
.sound__note{display:block;font-size:.82rem;color:var(--ink-soft);margin-top:.2rem}
.sound__arrow{display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--terra);gap:4px}
.sound__arrow em{font-style:normal;font-size:.74rem;color:var(--terra-deep);font-family:var(--f-brush)}
.steps{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:1.4rem}
.steps li{display:flex;align-items:center;gap:12px;font-size:1.02rem;color:var(--ink)}
.steps li span{flex:none;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-family:var(--f-latin);font-weight:600;color:#fff;background:linear-gradient(180deg,var(--terra-2),var(--terra));box-shadow:var(--shadow-sm)}
.words{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.word{text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:14px 8px}
.word__cvc{font-family:var(--f-latin);font-weight:600;font-size:1.6rem;color:var(--ink);display:block;letter-spacing:.04em}
.word__cvc b{color:var(--terra-deep)}
.word__emoji{font-size:1.6rem;display:block;margin:.1rem 0}
.word__ipa{font-family:var(--f-latin);font-size:.82rem;color:var(--ink-soft)}

/* ============ 课程路线 ============ */
.path{list-style:none;position:relative;max-width:760px;margin:0 auto;padding-left:8px}
.path::before{content:"";position:absolute;left:23px;top:14px;bottom:14px;width:0;border-left:3px dashed rgba(200,121,79,.45)}
.stop{position:relative;padding:0 0 clamp(18px,3vw,30px) 66px}
.stop:last-child{padding-bottom:0}
.stop__dot{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;font-family:var(--f-latin);font-weight:600;font-size:.92rem;color:#fff;
  background:radial-gradient(circle at 34% 28%,var(--gold),var(--terra) 80%);
  box-shadow:var(--shadow-sm),0 0 0 5px var(--paper);z-index:1;
}
.stop--more .stop__dot{background:radial-gradient(circle at 34% 28%,#cdbfa8,#a9967c);font-size:1.3rem}
.stop__card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(16px,2.2vw,24px);box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease}
.stop__card:hover{transform:translateX(5px);box-shadow:var(--shadow-md)}
.stop__card h3{font-family:var(--f-display);font-weight:400;font-size:1.28rem;margin-bottom:.3rem;color:var(--ink)}
.stop__card p{font-size:.94rem;color:var(--ink-soft)}

/* ============ 露露老师 ============ */
.teacher__wrap{display:grid;grid-template-columns:280px 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.teacher__media{display:flex;flex-direction:column;align-items:center;gap:14px}
.teacher__avatar{
  width:230px;height:230px;border-radius:50%;position:relative;
  box-shadow:var(--shadow-lg),0 0 0 8px var(--paper-2),0 0 0 10px var(--line);
}
.teacher__avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover;object-position:center 20%;display:block}
.teacher__avatar::after{content:"";position:absolute;inset:-18px;border-radius:50%;border:2px dashed rgba(200,121,79,.4)}
.teacher__badge{font-size:.86rem;color:var(--terra-deep);background:rgba(200,121,79,.12);border:1px solid rgba(200,121,79,.25);padding:5px 16px;border-radius:999px}
.teacher__note{font-size:.74rem;color:var(--ink-soft);opacity:.8}
.teacher__lead{font-size:clamp(1.05rem,2.4vw,1.3rem);color:var(--ink);margin-bottom:.9rem;font-family:var(--f-display)}
.teacher__text{color:var(--ink-soft);margin-bottom:1.4rem;max-width:60ch}
.teacher__tags{list-style:none;display:flex;flex-wrap:wrap;gap:10px}
.teacher__tags li{font-size:.9rem;color:var(--ink);background:var(--paper-2);border:1px solid var(--line);border-radius:999px;padding:7px 16px;box-shadow:var(--shadow-sm)}

/* ============ 出品方 ============ */
.publisher__wrap{text-align:center;max-width:680px;margin:0 auto}
.publisher__logo{
  width:min(330px,74vw);height:auto;margin:0 auto 22px;display:block;
  filter:drop-shadow(0 14px 24px rgba(71,53,39,.16));
}
.publisher__text{color:var(--ink-soft);font-size:1.05rem}

/* ============ 页脚 ============ */
.footer{position:relative;overflow:hidden;color:#fff;text-align:center}
.footer__scene{position:absolute;inset:0;z-index:0}
.footer__scene img{width:100%;height:100%;object-fit:cover}
.footer__veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(168,93,57,.30),rgba(71,53,39,.78))}
.footer__content{position:relative;z-index:1;padding:clamp(70px,12vw,130px) 20px clamp(34px,5vw,50px)}
.footer__title{font-family:var(--f-display);font-size:clamp(1.8rem,5vw,2.8rem);margin-bottom:.6rem;text-shadow:0 2px 14px rgba(0,0,0,.4)}
.footer__line{font-size:1rem;opacity:.95;text-shadow:0 1px 8px rgba(0,0,0,.4)}
.footer__slogan{font-family:var(--f-brush);font-size:clamp(1.2rem,3vw,1.7rem);margin:1.3rem 0 2rem;color:#ffe4b8;text-shadow:0 2px 10px rgba(0,0,0,.4)}
.footer__slogan .ipa{background:rgba(255,255,255,.18);color:#fff}
.footer__copy{font-size:.84rem;opacity:.8}
.footer__beian{margin-top:.55rem;font-size:.84rem}
.footer__beian a{color:#fff;opacity:.86;text-decoration:none}
.footer__beian a:hover{text-decoration:underline;opacity:1}

/* ============ 正片弹窗 ============ */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}
.modal[hidden]{display:none}
.modal__backdrop{position:absolute;inset:0;background:rgba(40,28,18,.82);backdrop-filter:blur(6px);opacity:0;transition:opacity .3s}
.modal__box{position:relative;width:min(1000px,100%);background:#241a12;border-radius:var(--r-lg);box-shadow:var(--shadow-lg);padding:14px;transform:scale(.94);opacity:0;transition:transform .35s cubic-bezier(.2,.9,.3,1.2),opacity .3s}
.modal.is-open .modal__backdrop{opacity:1}
.modal.is-open .modal__box{transform:scale(1);opacity:1}
.modal__player{border-radius:var(--r);overflow:hidden;background:#000;aspect-ratio:16/9}
.modal__player video{width:100%;height:100%;object-fit:contain;background:#000}
.modal__cap{color:#f1e2cc;text-align:center;font-family:var(--f-display);font-size:1.05rem;padding:12px 0 4px}
.modal__close{position:absolute;top:-16px;right:-16px;width:44px;height:44px;border-radius:50%;border:0;cursor:pointer;color:var(--ink);background:var(--paper-2);box-shadow:var(--shadow-md);display:grid;place-items:center;transition:transform .25s}
.modal__close:hover{transform:rotate(90deg) scale(1.05)}

/* ============ 滚动揭示 ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.features .feature:nth-child(2){transition-delay:.08s}
.features .feature:nth-child(3){transition-delay:.16s}
.features .feature:nth-child(4){transition-delay:.24s}
.cast .cast__card:nth-child(2){transition-delay:.1s}
.cast .cast__card:nth-child(3){transition-delay:.2s}
.reel .clip:nth-child(2){transition-delay:.06s}
.reel .clip:nth-child(3){transition-delay:.12s}
.reel .clip:nth-child(4){transition-delay:.18s}
.reel .clip:nth-child(5){transition-delay:.24s}
.reel .clip:nth-child(6){transition-delay:.3s}
.reel .clip:nth-child(7){transition-delay:.36s}
.beats .beat:nth-child(2){transition-delay:.08s}
.beats .beat:nth-child(3){transition-delay:.16s}
.beats .beat:nth-child(4){transition-delay:.24s}
.path .stop:nth-child(even){transition-delay:.08s}

/* ============ 响应式 ============ */
@media (max-width:980px){
  .teacher__wrap{grid-template-columns:1fr;justify-items:center;text-align:center}
  .teacher__text{margin-left:auto;margin-right:auto}
  .teacher__tags{justify-content:center}
  .knowledge{grid-template-columns:1fr}
  .beats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav__links{
    position:absolute;top:var(--nav-h);right:14px;left:14px;flex-direction:column;gap:0;
    background:rgba(252,247,236,.98);border:1px solid var(--line);border-radius:var(--r);
    box-shadow:var(--shadow-lg);padding:8px;transform-origin:top;
    transform:scaleY(.6);opacity:0;pointer-events:none;transition:.28s ease;
  }
  .nav__links.is-open{transform:scaleY(1);opacity:1;pointer-events:auto}
  .nav__links a{padding:13px 14px;border-radius:10px}
  .nav__links a::after{display:none}
  .nav__links a:hover{background:rgba(200,121,79,.1)}
  .nav__menu{display:flex}
  .cast{grid-template-columns:1fr}
  .cast__art{height:280px}
  .reel{grid-template-columns:repeat(2,1fr)}
  .clip--wide,.reel>:nth-child(6){grid-column:span 2}
}
@media (max-width:560px){
  body{font-size:16px}
  .reel{grid-template-columns:1fr}
  .clip--wide,.reel>:nth-child(6){grid-column:span 1}
  .beats{grid-template-columns:1fr}
  .words{grid-template-columns:1fr}
  .sounds{flex-direction:column}
  .sound__arrow svg{transform:rotate(90deg)}
  .hero__rope--l{left:16%}.hero__rope--r{right:16%}
  .modal__close{top:6px;right:6px;background:rgba(252,247,236,.92)}
}

/* ============ 减少动态 ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .hero__img{transform:scale(1.04)}
}